]> "http://cicero.uni-koblenz.de/wiki/index.php?title=Prj:Testproject" Specifically describes spatial context. An Ambiance is by definition a location, i.e., there are things in this ambiance. It may not be physical, because it may be made of software environments virtually connected. Substances are abstract meta-entities because we talk about them as abstract rather than physical notions. For instance, tuna is an instance of substance, but this instance is not a physical tuna but refer to 'tuna-substance'. Same for nutrients - e.g., sodium is an instance of substance. A PhysicalEntityInSpace is something that is not Abstract and has a location, which may not be known. A PhysicalLocation is something thatis a PhysicalEntityInSpace and is used as the object of a hasLocation statement. This includes things that are not 'ontologically' locations - e.g., "andriy's location is chair 333" Temperature is a class, individual temperatures, such as 'the temperature in enrico's bedroom' are instances of this class. A Physical Quantity is something like '30 degree-celsius', i.e. a pair with a value and a unit. 1 An abstraction which tells us something about the current situation, e.g., 'party'. 1 An Ambiance is by definition a location, i.e., there are things in this ambiance. It may not be physical, because it may be made of software environments virtually connected. Temperature is a class, individual temperatures, such as 'the temperature in enrico's bedroom' are instances of this class. A Spatial-Thing has two subclasses, Location and Entity-in-Space. An Entity-in-Space is something that conceptually has a location, which does not need to be physical. A location is something which is the object of a has-location statement. Redefined from simple-time-v2 to make it a subclass of Entity.