A minimal vocabulary for the Preposition Ontology (PO) as linked data. The vocabulary includes also the declaration of the values used as concepts in sup (subsumption), srtype (semantic type of the range), and ss (topic) for a prepositional sense. Original data seem to follow a WordNet-like schema, with prepositional synsets containing senses, evoked by preposition words (a main word, possibly others as synonyms). The vocabulary is aligned to the Framester schema for interoperability with other lexical and factual ontologies.