- Property is a special class (rdf:Property)
- Properties are constrained by their domain and range
- There is also a possibility for a "sub-property"
- Properties are also resources ...
- .. so properties of properties can be expressed as RDF properties
Example: (P rdfs:range C) means:
this is an RDF statement with subject P, object C, and property rdfs:range
- P is a property
- C is a class instance
- when using P, the "object" must be an individual in C