@prefix ddi: <http://rdf-vocabulary.ddialliance.org/lifecycle#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xml: <http://www.w3.org/XML/1998/namespace> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix schema: <https://schema.org/> .
@prefix gesiskg: <https://data.gesis.org/gesiskg/schema/> .
@base <https://data.gesis.org/gesiskg/schema/> .

<https://data.gesis.org/gesiskg/schema/> rdf:type owl:Ontology ;
                                          rdfs:comment "The GESIS Knowledge Graph Ontology models scholarly metadata in the social science domain, emphasizing the links between scientific resources and their origin."@en ;
                                          rdfs:label "GESIS Knowledge Graph Ontology" ;
                                          rdfs:seeAlso <https://data.gesis.org/gesiskg/> ;
                                          owl:versionInfo "2.0.0" .

#################################################################
#    Object Properties
#################################################################

###  https://data.gesis.org/gesiskg/schema/advisoryInstitution
gesiskg:advisoryInstitution rdf:type owl:ObjectProperty ;
                            rdfs:domain schema:Dataset ;
                            rdfs:range schema:Organization ;
                            rdfs:comment "This relation specifies the advisory institution of a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/associatedTask
gesiskg:associatedTask rdf:type owl:ObjectProperty ;
                       rdfs:domain gesiskg:Tutorial ,
                                   schema:SoftwareSourceCode ;
                       rdfs:range gesiskg:Task ;
                       rdfs:comment "This property specifies a relation between a tutorial or software source code to an associated task."@en .


###  https://data.gesis.org/gesiskg/schema/constructs
gesiskg:constructs rdf:type owl:ObjectProperty ;
                   rdfs:domain ddi:Instrument ;
                   rdfs:range schema:DefinedTerm ;
                   rdfs:comment "This relation specifies the constructs of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/duplicate
gesiskg:duplicate rdf:type owl:ObjectProperty ;
                  rdfs:domain schema:CreativeWork ;
                  rdfs:range gesiskg:DuplicateMetadata ;
                  rdfs:comment "This property is used to specify a duplicate resource of the resource in the domain."@en .


###  https://data.gesis.org/gesiskg/schema/editingInstitute
gesiskg:editingInstitute rdf:type owl:ObjectProperty ;
                         rdfs:domain schema:CreativeWork ;
                         rdfs:range schema:Organization ;
                         rdfs:comment "This property indicates that for a creative work there is an institution or organization in a editing role."@en .


###  https://data.gesis.org/gesiskg/schema/hasSoftwareSourceCode
gesiskg:hasSoftwareSourceCode rdf:type owl:ObjectProperty ;
                              rdfs:domain schema:CreativeWork ;
                              rdfs:range schema:SoftwareSourceCode ;
                              rdfs:comment "This property links from a tutorial to a corresponding software source code."@en .


###  https://data.gesis.org/gesiskg/schema/hasTutorial
gesiskg:hasTutorial rdf:type owl:ObjectProperty ;
                    rdfs:domain schema:CreativeWork ;
                    rdfs:range gesiskg:Tutorial ;
                    rdfs:comment "This property links a software source code to its corresponding tutorial."@en .


###  https://data.gesis.org/gesiskg/schema/libraryLocation
gesiskg:libraryLocation rdf:type owl:ObjectProperty ;
                        rdfs:domain schema:CreativeWork ;
                        rdfs:range schema:Place ;
                        rdfs:comment "This property indicates the location of the library where this creative work is located at."@en .


###  https://data.gesis.org/gesiskg/schema/reference
gesiskg:reference rdf:type owl:ObjectProperty ;
                  rdfs:domain schema:CreativeWork ;
                  rdfs:range gesiskg:Reference ;
                  rdfs:comment "This relation indicates that the resource in the domain holds a reference to another resource."@en .


###  https://data.gesis.org/gesiskg/schema/referenceMetadata
gesiskg:referenceMetadata rdf:type owl:ObjectProperty ;
                          rdfs:domain gesiskg:Reference ;
                          rdfs:range gesiskg:LinkMetadata ;
                          rdfs:comment "This property indicates a relation between a reference class and a metadata class which provides more information about the reference."@en .


###  https://data.gesis.org/gesiskg/schema/relatedDataset
gesiskg:relatedDataset rdf:type owl:ObjectProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:range schema:Dataset ;
                       rdfs:comment "This property specifies a link to one or more related datasets."@en .


###  https://data.gesis.org/gesiskg/schema/relatedPublication
gesiskg:relatedPublication rdf:type owl:ObjectProperty ;
                           rdfs:domain schema:CreativeWork ;
                           rdfs:range schema:ScholarlyArticle ;
                           rdfs:comment "This property specifies a link to one or more related publications."@en .


###  https://data.gesis.org/gesiskg/schema/relatedVariable
gesiskg:relatedVariable rdf:type owl:ObjectProperty ;
                        rdfs:domain schema:CreativeWork ;
                        rdfs:range ddi:Variable ;
                        rdfs:comment "This property specifies a link to one or more related variables."@en .


###  https://data.gesis.org/gesiskg/schema/system
gesiskg:system rdf:type owl:ObjectProperty ;
               rdfs:domain schema:Dataset ;
               rdfs:range schema:SoftwareApplication ;
               rdfs:comment "This property is used to specify in which technical system, software, or format a dataset is available."@en .


###  https://data.gesis.org/gesiskg/schema/usedIn
gesiskg:usedIn rdf:type owl:ObjectProperty ;
               rdfs:domain ddi:Instrument ;
               rdfs:range schema:Dataset ;
               rdfs:comment "This relation indicates that an instrument has been used in a dataset."@en .


###  https://schema.org/about
schema:about rdf:type owl:ObjectProperty ;
             rdfs:domain schema:CreativeWork ;
             rdfs:range owl:Thing ;
             rdfs:comment "The subject matter of the content."@en .


###  https://schema.org/author
schema:author rdf:type owl:ObjectProperty ;
              rdfs:domain schema:CreativeWork ;
              rdfs:range schema:Organization ,
                         schema:Person ;
              rdfs:comment "The author of this content."@en .


###  https://schema.org/citation
schema:citation rdf:type owl:ObjectProperty ;
                rdfs:domain schema:CreativeWork ;
                rdfs:range schema:CreativeWork ;
                rdfs:comment "A citation or reference to another creative work, such as another publication, web page, scholarly article, etc."@en .


###  https://schema.org/contributor
schema:contributor rdf:type owl:ObjectProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:range schema:Organization ,
                              schema:Person ;
                   rdfs:comment "A secondary contributor to the CreativeWork or Event."@en .


###  https://schema.org/editor
schema:editor rdf:type owl:ObjectProperty ;
              rdfs:domain schema:CreativeWork ;
              rdfs:range schema:Person ;
              rdfs:comment "Specifies the Person who edited the CreativeWork."@en .


###  https://schema.org/hasPart
schema:hasPart rdf:type owl:ObjectProperty ;
               rdfs:domain schema:CreativeWork ;
               rdfs:range schema:CreativeWork ;
               rdfs:comment "Indicates an item or CreativeWork that this item, or CreativeWork (in some sense), is part of."@en .


###  https://schema.org/isPartOf
schema:isPartOf rdf:type owl:ObjectProperty ;
                rdfs:domain schema:CreativeWork ;
                rdfs:range schema:CreativeWork ;
                rdfs:comment "Indicates an item or CreativeWork that is part of this item, or CreativeWork (in some sense)."@en .


###  https://schema.org/mainEntity
schema:mainEntity rdf:type owl:ObjectProperty ;
                  rdfs:domain schema:CreativeWork ;
                  rdfs:range owl:Thing ;
                  rdfs:comment "Indicates the primary entity described in some page or other CreativeWork."@en .


###  https://schema.org/provider
schema:provider rdf:type owl:ObjectProperty ;
                rdfs:domain schema:CreativeWork ;
                rdfs:range schema:Organization ,
                           schema:Person ;
                rdfs:comment "The service provider, service operator, or service performer; the goods producer."@en .


###  https://schema.org/publisher
schema:publisher rdf:type owl:ObjectProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:range schema:Organization ,
                            schema:Person ;
                 rdfs:comment "The publisher of the creative work."@en .


#################################################################
#    Data properties
#################################################################

###  http://rdf-vocabulary.ddialliance.org/lifecycle#variableName
ddi:variableName rdf:type owl:DatatypeProperty ;
                 rdfs:domain ddi:Variable ;
                 rdfs:comment "This property specifies the name of a variable."@en .


###  https://data.gesis.org/gesiskg/schema/abstractiveSummary
gesiskg:abstractiveSummary rdf:type owl:DatatypeProperty ;
                           rdfs:domain schema:CreativeWork ;
                           rdfs:comment "This property specifies the tldr extreme summary generated out of the abstract of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/altId
gesiskg:altId rdf:type owl:DatatypeProperty ;
              rdfs:subPropertyOf schema:identifier ;
              rdfs:comment "This property specifies any alternative ID not fitting to the other identifier properties."@en .


###  https://data.gesis.org/gesiskg/schema/analysisUnit
gesiskg:analysisUnit rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:Dataset ;
                     rdfs:comment "This property specifies the analysis unit of a dataset, e.g., an individual, a household, a family, etc."@en .


###  https://data.gesis.org/gesiskg/schema/category
gesiskg:category rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:comment "This property specifies categories of a topic classification to which a creative work is assigned."@en .


###  https://data.gesis.org/gesiskg/schema/citationString
gesiskg:citationString rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property holds the citation string of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/citeIdentifier
gesiskg:citeIdentifier rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property holds an abbreviation of a citation reference for a creative work, e.g. in the pattern Author Year."@en .


###  https://data.gesis.org/gesiskg/schema/commonWords
gesiskg:commonWords rdf:type owl:DatatypeProperty ;
                    rdfs:domain gesiskg:Reference ;
                    rdfs:comment "This property specifies the identified common words within an identifed sentence of a variable reference."@en .


###  https://data.gesis.org/gesiskg/schema/criteria
gesiskg:criteria rdf:type owl:DatatypeProperty ;
                 rdfs:domain ddi:Instrument ;
                 rdfs:comment "This property holds a description of the quality criteria of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/currentVersion
gesiskg:currentVersion rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property specifies the version number of the most current version of a creative work and the corresponding date."@en .


###  https://data.gesis.org/gesiskg/schema/dataCollection
gesiskg:dataCollection rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:Dataset ;
                       rdfs:comment "This property describes the data collection method, e.g., oral survey, mail survey, face-to-face interview, etc."@en .


###  https://data.gesis.org/gesiskg/schema/dataCollector
gesiskg:dataCollector rdf:type owl:DatatypeProperty ;
                      rdfs:domain schema:Dataset ;
                      rdfs:comment "This property specifies the agent carrying out the data collection. This can be an institute, an individual person, a research group, etc."@en .


###  https://data.gesis.org/gesiskg/schema/dataSource
gesiskg:dataSource rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:comment "This property specifies the source of a dataset cited in a publication."@en .


###  https://data.gesis.org/gesiskg/schema/datasetDatatype
gesiskg:datasetDatatype rdf:type owl:DatatypeProperty ;
                        rdfs:domain schema:Dataset ;
                        rdfs:comment "This property specifies the datatype of data in a dataset, e.g. numerical data, textual data, etc."@en .


###  https://data.gesis.org/gesiskg/schema/datasetType
gesiskg:datasetType rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:Dataset ;
                    rdfs:comment "This property specifies the type of a dataset, e.g, SPSS or Stata."@en .


###  https://data.gesis.org/gesiskg/schema/dateEmbargoEnd
gesiskg:dateEmbargoEnd rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property allows the specification of an end date for a publication embargo of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/dateVersion
gesiskg:dateVersion rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:CreativeWork ;
                    rdfs:comment "This property describes the date of the (current) version of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/development
gesiskg:development rdf:type owl:DatatypeProperty ;
                    rdfs:domain ddi:Instrument ;
                    rdfs:comment "This property specifies a description of the development of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/doi
gesiskg:doi rdf:type owl:DatatypeProperty ;
            rdfs:subPropertyOf schema:identifier ;
            rdfs:comment "This property specifies a DOI."@en .


###  https://data.gesis.org/gesiskg/schema/eprint
gesiskg:eprint rdf:type owl:DatatypeProperty ;
               rdfs:domain schema:CreativeWork ;
               rdfs:comment "This property indicates a direct link to a pdf file of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/extractiveSummary
gesiskg:extractiveSummary rdf:type owl:DatatypeProperty ;
                          rdfs:domain schema:CreativeWork ;
                          rdfs:comment "This property specifies the most comprehensive sentence of abstract sentences from a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/fromPage
gesiskg:fromPage rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:comment "This property indicates the first page of a publication if it is part of a creative work series."@en .


###  https://data.gesis.org/gesiskg/schema/gitReference
gesiskg:gitReference rdf:type owl:DatatypeProperty ;
                     rdfs:subPropertyOf schema:identifier ;
                     rdfs:comment "This property specifies the ID of a GitHub repository."@en .


###  https://data.gesis.org/gesiskg/schema/groupDescription
gesiskg:groupDescription rdf:type owl:DatatypeProperty ;
                         rdfs:domain schema:Dataset ;
                         rdfs:comment "The property allows to describe the group who created or maintains a dataset, e.g., a research data centre."@en .


###  https://data.gesis.org/gesiskg/schema/groupNumber
gesiskg:groupNumber rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:Dataset ;
                    rdfs:comment "This property indicates an internal ID of the group who created or maintains a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/hasFulltext
gesiskg:hasFulltext rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:CreativeWork ;
                    rdfs:range xsd:boolean ;
                    rdfs:comment "This property specifies whether a fulltext of the creative work is available or not, e.g., values are true or false."@en .


###  https://data.gesis.org/gesiskg/schema/hasSocialSurveyItems
gesiskg:hasSocialSurveyItems rdf:type owl:DatatypeProperty ;
                             rdfs:domain ddi:Instrument ;
                             rdfs:range xsd:boolean ;
                             rdfs:comment "This property specifies a boolean value whether a survey instrument has social survey items included or not."@en .


###  https://data.gesis.org/gesiskg/schema/initsFirst
gesiskg:initsFirst rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:Person ;
                   rdfs:comment "This property indicates the initials of the first name of a person."@en .


###  https://data.gesis.org/gesiskg/schema/levelOfDifficulty
gesiskg:levelOfDifficulty rdf:type owl:DatatypeProperty ;
                          rdfs:domain gesiskg:Tutorial ;
                          rdfs:comment "This property indicates the level of difficulty of a tutorial, e.g., beginner or intermediate."@en .


###  https://data.gesis.org/gesiskg/schema/license
gesiskg:license rdf:type owl:DatatypeProperty ;
                rdfs:domain schema:CreativeWork ;
                rdfs:comment "This property captures free text information about the license of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/linkContext
gesiskg:linkContext rdf:type owl:DatatypeProperty ;
                    rdfs:domain gesiskg:ReferenceMetadata ;
                    rdfs:comment "This property specifies the context, e.g. a text snippet or annotation indicating the reason or evidence for the detected link."@en .


###  https://data.gesis.org/gesiskg/schema/linkScore
gesiskg:linkScore rdf:type owl:DatatypeProperty ;
                  rdfs:domain gesiskg:ReferenceMetadata ;
                  rdfs:comment "This property specifies computed confidence score assigned to an automatically generated link."@en .


###  https://data.gesis.org/gesiskg/schema/linkSource
gesiskg:linkSource rdf:type owl:DatatypeProperty ;
                   rdfs:domain gesiskg:ReferenceMetadata ;
                   rdfs:comment "This property specifies information about the source of a link, e.g., naming the pipeline by which a link has been generated or the project in which a manual link has been identified."@en .


###  https://data.gesis.org/gesiskg/schema/linkType
gesiskg:linkType rdf:type owl:DatatypeProperty ;
                 rdfs:domain gesiskg:ReferenceMetadata ;
                 rdfs:comment "This property specifies the nature of the relationship such as a citation or the methodological use of a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/linkingMethod
gesiskg:linkingMethod rdf:type owl:DatatypeProperty ;
                      rdfs:domain gesiskg:ReferenceMetadata ;
                      rdfs:comment "This property describes whether a link has been manually curated, automatically generated, or identified as a search link."@en .


###  https://data.gesis.org/gesiskg/schema/linksCodebook
gesiskg:linksCodebook rdf:type owl:DatatypeProperty ;
                      rdfs:domain schema:Dataset ;
                      rdfs:comment "This property specifies the link to the codebook of a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/linksDOI
gesiskg:linksDOI rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:comment "This property specifies the full http resolvable DOI link of a resource if available in the metadata."@en .


###  https://data.gesis.org/gesiskg/schema/linksDataset
gesiskg:linksDataset rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:CreativeWork ;
                     rdfs:comment "This property provides links to the actual physical or raw dataset."@en .


###  https://data.gesis.org/gesiskg/schema/linksDocumentation
gesiskg:linksDocumentation rdf:type owl:DatatypeProperty ;
                           rdfs:domain schema:CreativeWork ;
                           rdfs:comment "This property specifies one or more links to a documentation."@en .


###  https://data.gesis.org/gesiskg/schema/linksGroup
gesiskg:linksGroup rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:Dataset ;
                   rdfs:comment "This property specifies a link to the group which created or maintains a dataset, e.g., a research data centre."@en .


###  https://data.gesis.org/gesiskg/schema/linksGuide
gesiskg:linksGuide rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:comment "This property specifies a link to a guide, guideline, or best practice document related to a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/linksLabel
gesiskg:linksLabel rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:comment "This property specifies a label to a given link in the url property."@en .


###  https://data.gesis.org/gesiskg/schema/linksOtherdocs
gesiskg:linksOtherdocs rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property specifies links to further documents related to a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/linksProjectReport
gesiskg:linksProjectReport rdf:type owl:DatatypeProperty ;
                           rdfs:domain schema:CreativeWork ;
                           rdfs:comment "This property specifies a link to a project report related to a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/linksQuestionnaire
gesiskg:linksQuestionnaire rdf:type owl:DatatypeProperty ;
                           rdfs:domain schema:Dataset ;
                           rdfs:comment "This property specifies the link to the questionnaire of a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/linksRdc
gesiskg:linksRdc rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:comment "This property specifies a link to the website of the corresponding research data centre."@en .


###  https://data.gesis.org/gesiskg/schema/linksRemarks
gesiskg:linksRemarks rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:CreativeWork ;
                     rdfs:comment "This property specifies links to further remarks corresponding to a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/linksResponseSheet
gesiskg:linksResponseSheet rdf:type owl:DatatypeProperty ;
                           rdfs:domain ddi:Instrument ;
                           rdfs:comment "This property specifies a link to the response sheet of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/linksURN
gesiskg:linksURN rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork ;
                 rdfs:comment "This property specifies the full http resolvable URN link of a resource."@en .


###  https://data.gesis.org/gesiskg/schema/linksVariable
gesiskg:linksVariable rdf:type owl:DatatypeProperty ;
                      rdfs:domain ddi:Variable ;
                      rdfs:comment "This property specifies a link to an informative resource describing a variable in more detail."@en .


###  https://data.gesis.org/gesiskg/schema/locationsFree
gesiskg:locationsFree rdf:type owl:DatatypeProperty ;
                      rdfs:domain schema:CreativeWork ;
                      rdfs:comment "This property specifies the countries in which the access to the creative work is free."@en .


###  https://data.gesis.org/gesiskg/schema/locationsId
gesiskg:locationsId rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:CreativeWork ;
                    rdfs:comment "This property specifies the ISO code of a location."@en .


###  https://data.gesis.org/gesiskg/schema/mentionID
gesiskg:mentionID rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:Organization ,
                              schema:Person ;
                  rdfs:comment "This property specifies an ID for authors, contributors, editors, etc. for a person mention"@en .


###  https://data.gesis.org/gesiskg/schema/methodology
gesiskg:methodology rdf:type owl:DatatypeProperty ;
                    rdfs:domain gesiskg:Reference ;
                    rdfs:comment "This property specifies the applied methodology within a reference."@en .


###  https://data.gesis.org/gesiskg/schema/multilingual
gesiskg:multilingual rdf:type owl:DatatypeProperty ;
                     rdfs:domain ddi:Instrument ;
                     rdfs:comment "This property describes the multilingual availability of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/numberOfItems
gesiskg:numberOfItems rdf:type owl:DatatypeProperty ;
                      rdfs:domain ddi:Instrument ;
                      rdfs:comment "Specifies the number of social survey items."@en .


###  https://data.gesis.org/gesiskg/schema/numberOfUnits
gesiskg:numberOfUnits rdf:type owl:DatatypeProperty ;
                      rdfs:domain schema:Dataset ;
                      rdfs:comment "This property describes the number of units of a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/numberOfVariables
gesiskg:numberOfVariables rdf:type owl:DatatypeProperty ;
                          rdfs:domain schema:Dataset ;
                          rdfs:comment "This property specifies the number of variables used in a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/orcid
gesiskg:orcid rdf:type owl:DatatypeProperty ;
              rdfs:subPropertyOf schema:identifier ;
              rdfs:domain schema:Person ;
              rdfs:comment "This property specifies an ORCID."@en .


###  https://data.gesis.org/gesiskg/schema/portalUrl
gesiskg:portalUrl rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:CreativeWork ;
                  rdfs:comment "This property specifies the URL in the corresponding web portal."@en .


###  https://data.gesis.org/gesiskg/schema/principalInvestigator
gesiskg:principalInvestigator rdf:type owl:DatatypeProperty ;
                              rdfs:domain schema:CreativeWork ;
                              rdfs:comment "This property specifies the principal investigators of a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/quality
gesiskg:quality rdf:type owl:DatatypeProperty ;
                rdfs:domain ddi:Instrument ;
                rdfs:comment "This property describes the investigated quality criteria of the instrument."@en .


###  https://data.gesis.org/gesiskg/schema/report
gesiskg:report rdf:type owl:DatatypeProperty ;
               rdfs:domain ddi:Instrument ;
               rdfs:comment "This property specifies the report about a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/reviewedWork
gesiskg:reviewedWork rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:CreativeWork ;
                     rdfs:comment "This property specifies the title of the creative work which is reviewed within a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/selectionMethod
gesiskg:selectionMethod rdf:type owl:DatatypeProperty ;
                        rdfs:domain schema:Dataset ;
                        rdfs:comment "This property describes the method underlying a data selection."@en .


###  https://data.gesis.org/gesiskg/schema/sentence
gesiskg:sentence rdf:type owl:DatatypeProperty ;
                 rdfs:domain gesiskg:Reference ;
                 rdfs:comment "This property specifies the identified sentence within a variable reference."@en .


###  https://data.gesis.org/gesiskg/schema/sentenceID
gesiskg:sentenceID rdf:type owl:DatatypeProperty ;
                   rdfs:domain gesiskg:Reference ;
                   rdfs:comment "This property specifies the associated sentence ID within a variable reference."@en .


###  https://data.gesis.org/gesiskg/schema/sourceCollection
gesiskg:sourceCollection rdf:type owl:DatatypeProperty ;
                         rdfs:domain schema:CreativeWork ;
                         rdfs:comment "This property describes the collection of which the creative work is part of."@en .


###  https://data.gesis.org/gesiskg/schema/sourceInfo
gesiskg:sourceInfo rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:comment "This property specifies the source data collection from which a resource is originating from."@en .


###  https://data.gesis.org/gesiskg/schema/studyComponent
gesiskg:studyComponent rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork ;
                       rdfs:comment "This property specifies a study component of the detected study which has been cited."@en .


###  https://data.gesis.org/gesiskg/schema/studyGroup
gesiskg:studyGroup rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork ;
                   rdfs:comment "This property specifies the study group of the detected study which has been cited, e.g., a survey programme."@en .


###  https://data.gesis.org/gesiskg/schema/studyNumber
gesiskg:studyNumber rdf:type owl:DatatypeProperty ;
                    rdfs:subPropertyOf schema:identifier ;
                    rdfs:comment "This property specifies the GESIS study number."@en .


###  https://data.gesis.org/gesiskg/schema/studyPublications
gesiskg:studyPublications rdf:type owl:DatatypeProperty ;
                          rdfs:domain schema:Dataset ;
                          rdfs:comment "This property captures publications about a dataset which are not available as separate resources."@en .


###  https://data.gesis.org/gesiskg/schema/tags
gesiskg:tags rdf:type owl:DatatypeProperty ;
             rdfs:domain schema:CreativeWork ;
             rdfs:comment "This property captures annotated tags for a creative work."@en .


###  https://data.gesis.org/gesiskg/schema/thematicClassification
gesiskg:thematicClassification rdf:type owl:DatatypeProperty ;
                               rdfs:domain ddi:Variable ;
                               rdfs:comment "This property specifies items of a thematic classification or taxonomy for a survey variable."@en .


###  https://data.gesis.org/gesiskg/schema/theory
gesiskg:theory rdf:type owl:DatatypeProperty ;
               rdfs:domain ddi:Instrument ;
               rdfs:comment "This property contains a description of the theory of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/timeCollection
gesiskg:timeCollection rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork .


###  https://data.gesis.org/gesiskg/schema/toPage
gesiskg:toPage rdf:type owl:DatatypeProperty ;
               rdfs:domain schema:CreativeWork ;
               rdfs:comment "This property indicates the last page of a publication if it is part of a creative work series."@en .


###  https://data.gesis.org/gesiskg/schema/urn
gesiskg:urn rdf:type owl:DatatypeProperty ;
            rdfs:subPropertyOf schema:identifier ;
            rdfs:comment "This property specifies an URN."@en .


###  https://data.gesis.org/gesiskg/schema/validity
gesiskg:validity rdf:type owl:DatatypeProperty ;
                 rdfs:domain ddi:Instrument ;
                 rdfs:comment "This property provides information on the validity of a survey instrument."@en .


###  https://data.gesis.org/gesiskg/schema/variableInterviewInstructions
gesiskg:variableInterviewInstructions rdf:type owl:DatatypeProperty ;
                                      rdfs:domain ddi:Variable ;
                                      rdfs:comment "This property specifies instructions to interviewers for specific survey variables."@en .


###  https://data.gesis.org/gesiskg/schema/variableLabel
gesiskg:variableLabel rdf:type owl:DatatypeProperty ;
                      rdfs:domain ddi:Variable ;
                      rdfs:comment "This property specifies the label of a variable."@en .


###  https://data.gesis.org/gesiskg/schema/variableType
gesiskg:variableType rdf:type owl:DatatypeProperty ;
                     rdfs:domain ddi:Variable ;
                     rdfs:comment "This property specifies the type of a variable, e.g., cross-sectional, panel, yearly, etc."@en .


###  https://schema.org/abstract
schema:abstract rdf:type owl:DatatypeProperty ;
                rdfs:domain schema:CreativeWork .


###  https://schema.org/alternateName
schema:alternateName rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:CreativeWork .


###  https://schema.org/archivedAt
schema:archivedAt rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:CreativeWork .


###  https://schema.org/codeRepository
schema:codeRepository rdf:type owl:DatatypeProperty ;
                      rdfs:domain schema:CreativeWork .


###  https://schema.org/comment
schema:comment rdf:type owl:DatatypeProperty ;
               rdfs:domain schema:CreativeWork .


###  https://schema.org/conditionsOfAccess
schema:conditionsOfAccess rdf:type owl:DatatypeProperty ;
                          rdfs:domain schema:CreativeWork .


###  https://schema.org/dateModified
schema:dateModified rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:CreativeWork .


###  https://schema.org/datePublished
schema:datePublished rdf:type owl:DatatypeProperty ;
                     rdfs:domain schema:CreativeWork .


###  https://schema.org/description
schema:description rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork .


###  https://schema.org/downloadURL
schema:downloadURL rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork .


###  https://schema.org/endDate
schema:endDate rdf:type owl:DatatypeProperty ;
               rdfs:domain schema:CreativeWork .


###  https://schema.org/familyName
schema:familyName rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:Person .


###  https://schema.org/format
schema:format rdf:type owl:DatatypeProperty ;
              rdfs:domain schema:CreativeWork .


###  https://schema.org/funder
schema:funder rdf:type owl:DatatypeProperty ;
              rdfs:domain schema:CreativeWork .


###  https://schema.org/givenName
schema:givenName rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:Person .


###  https://schema.org/identifier
schema:identifier rdf:type owl:DatatypeProperty ;
                  rdfs:domain owl:Thing .


###  https://schema.org/inLanguage
schema:inLanguage rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:CreativeWork .


###  https://schema.org/isbn
schema:isbn rdf:type owl:DatatypeProperty ;
            rdfs:domain schema:CreativeWork .


###  https://schema.org/issn
schema:issn rdf:type owl:DatatypeProperty ;
            rdfs:domain schema:CreativeWork .


###  https://schema.org/issueNumber
schema:issueNumber rdf:type owl:DatatypeProperty ;
                   rdfs:domain schema:CreativeWork .


###  https://schema.org/measurementTechnique
schema:measurementTechnique rdf:type owl:DatatypeProperty ;
                            rdfs:domain schema:Dataset .


###  https://schema.org/name
schema:name rdf:type owl:DatatypeProperty ;
            rdfs:domain owl:Thing .


###  https://schema.org/programmingLanguage
schema:programmingLanguage rdf:type owl:DatatypeProperty ;
                           rdfs:domain schema:CreativeWork .


###  https://schema.org/publicationType
schema:publicationType rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork .


###  https://schema.org/spatialCoverage
schema:spatialCoverage rdf:type owl:DatatypeProperty ;
                       rdfs:domain schema:CreativeWork .


###  https://schema.org/startDate
schema:startDate rdf:type owl:DatatypeProperty ;
                 rdfs:domain schema:CreativeWork .


###  https://schema.org/status
schema:status rdf:type owl:DatatypeProperty ;
              rdfs:domain schema:CreativeWork .


###  https://schema.org/temporalCoverage
schema:temporalCoverage rdf:type owl:DatatypeProperty ;
                        rdfs:domain schema:CreativeWork .


###  https://schema.org/timeRequired
schema:timeRequired rdf:type owl:DatatypeProperty ;
                    rdfs:domain gesiskg:Tutorial .


###  https://schema.org/uploadDate
schema:uploadDate rdf:type owl:DatatypeProperty ;
                  rdfs:domain schema:CreativeWork .


###  https://schema.org/url
schema:url rdf:type owl:DatatypeProperty ;
           rdfs:domain owl:Thing .


###  https://schema.org/version
schema:version rdf:type owl:DatatypeProperty ;
               rdfs:domain owl:Thing .


###  https://schema.org/volumeNumber
schema:volumeNumber rdf:type owl:DatatypeProperty ;
                    rdfs:domain schema:CreativeWork .


#################################################################
#    Classes
#################################################################

###  http://rdf-vocabulary.ddialliance.org/lifecycle#Instrument
ddi:Instrument rdf:type owl:Class ;
               rdfs:subClassOf schema:CreativeWork ;
               rdfs:comment "A survey instrument or scale."@en .


###  http://rdf-vocabulary.ddialliance.org/lifecycle#Variable
ddi:Variable rdf:type owl:Class ;
             rdfs:subClassOf schema:CreativeWork ;
             rdfs:comment "A survey variable."@en .


###  https://data.gesis.org/gesiskg/schema/DatasetReference
gesiskg:DatasetReference rdf:type owl:Class ;
                         rdfs:subClassOf gesiskg:Reference ;
                         rdfs:comment "This class describes a reference from a creative work to a dataset."@en .


###  https://data.gesis.org/gesiskg/schema/DuplicateMetadata
gesiskg:DuplicateMetadata rdf:type owl:Class ;
                          rdfs:subClassOf gesiskg:ReferenceMetadata ;
                          rdfs:comment "Metadata related to a link or reference between two duplicate creative works."@en .


###  https://data.gesis.org/gesiskg/schema/LinkMetadata
gesiskg:LinkMetadata rdf:type owl:Class ;
                     rdfs:subClassOf gesiskg:ReferenceMetadata ;
                     rdfs:comment "Metadata related to a link or reference between two creative works from the same or different type."@en .


###  https://data.gesis.org/gesiskg/schema/PublicationReference
gesiskg:PublicationReference rdf:type owl:Class ;
                             rdfs:subClassOf gesiskg:Reference ;
                             rdfs:comment "This class describes a reference from a creative work to a publication."@en .


###  https://data.gesis.org/gesiskg/schema/Reference
gesiskg:Reference rdf:type owl:Class ;
                  rdfs:subClassOf schema:CreativeWork ;
                  rdfs:comment "This class is used to describe a reference from a creative work to another creative work."@en .


###  https://data.gesis.org/gesiskg/schema/ReferenceMetadata
gesiskg:ReferenceMetadata rdf:type owl:Class ;
                          rdfs:subClassOf schema:CreativeWork ;
                          rdfs:comment "This class captures metadata about a reference between two creative works."@en .


###  https://data.gesis.org/gesiskg/schema/Task
gesiskg:Task rdf:type owl:Class ;
             rdfs:subClassOf schema:CreativeWork ;
             rdfs:comment "This class is used to describe a task which is, e.g., addressed by a computational method or software source code."@en .


###  https://data.gesis.org/gesiskg/schema/Tutorial
gesiskg:Tutorial rdf:type owl:Class ;
                 rdfs:subClassOf schema:CreativeWork ;
                 rdfs:comment "A tutorial is a written, recorded and/or interactive introduction to a workflow, tool, or one or more methods. It is documented in a code repository, e.g., as a Jupyter Notebook or Quarto document."@en .


###  https://data.gesis.org/gesiskg/schema/VariableReference
gesiskg:VariableReference rdf:type owl:Class ;
                          rdfs:subClassOf gesiskg:Reference ;
                          rdfs:comment "This class describes a reference from a creative work to a variable."@en .


###  https://schema.org/Collection
schema:Collection rdf:type owl:Class ;
                  rdfs:subClassOf schema:CreativeWork ;
                  rdfs:comment "A collection of items, e.g. creative works or products."@en .


###  https://schema.org/CreativeWork
schema:CreativeWork rdf:type owl:Class ;
                    rdfs:comment "The most generic kind of creative work, including books, movies, photographs, software programs, etc."@en .


###  https://schema.org/CreativeWorkSeries
schema:CreativeWorkSeries rdf:type owl:Class ;
                          rdfs:subClassOf schema:CreativeWork ;
                          rdfs:comment "A CreativeWorkSeries in schema.org is a group of related items, typically but not necessarily of the same kind."@en .


###  https://schema.org/DataCatalog
schema:DataCatalog rdf:type owl:Class ;
                   rdfs:subClassOf schema:CreativeWorkSeries ;
                   rdfs:comment "A collection or group of datasets."@en .


###  https://schema.org/Dataset
schema:Dataset rdf:type owl:Class ;
               rdfs:subClassOf schema:CreativeWork ;
               rdfs:comment "A body of structured information describing some topic(s) of interest."@en .


###  https://schema.org/DefinedTerm
schema:DefinedTerm rdf:type owl:Class ;
                   rdfs:comment "A word, name, acronym, phrase, etc. with a formal definition. Often used in the context of category or subject classification, glossaries or dictionaries, product or creative work types, etc."@en .


###  https://schema.org/Organization
schema:Organization rdf:type owl:Class ;
                    rdfs:comment "An organization such as a school, NGO, corporation, club, etc."@en .


###  https://schema.org/Periodical
schema:Periodical rdf:type owl:Class ;
                  rdfs:subClassOf schema:CreativeWorkSeries ;
                  rdfs:comment "A publication in any medium issued in successive parts bearing numerical or chronological designations and intended to continue indefinitely, such as a magazine, scholarly journal, or newspaper."@en .


###  https://schema.org/Person
schema:Person rdf:type owl:Class ;
              rdfs:comment "A person (alive, dead, undead, or fictional)."@en .


###  https://schema.org/Place
schema:Place rdf:type owl:Class ;
             rdfs:comment "Entities that have a somewhat fixed, physical extension."@en .


###  https://schema.org/ScholarlyArticle
schema:ScholarlyArticle rdf:type owl:Class ;
                        rdfs:subClassOf schema:CreativeWork ;
                        rdfs:comment "A scholarly article."@en .


###  https://schema.org/SoftwareApplication
schema:SoftwareApplication rdf:type owl:Class ;
                           rdfs:subClassOf schema:CreativeWork ;
                           rdfs:comment "A software application."@en .


###  https://schema.org/SoftwareSourceCode
schema:SoftwareSourceCode rdf:type owl:Class ;
                          rdfs:subClassOf schema:CreativeWork ;
                          rdfs:comment "Computer programming source code. Example: Full (compile ready) solutions, code snippet samples, scripts, templates."@en .


###  Generated by the OWL API (version 4.5.29.2024-05-13T12:11:03Z) https://github.com/owlcs/owlapi