rdfsProperty
rdfs:Property is a class in the RDF Schema (RDFS) vocabulary that denotes RDF properties, i.e., the predicates used in RDF triples. Resources that are properties are instances of rdfs:Property, and many processors infer type information such as rdf:type rdfs:Property for well-known predicates like rdfs:domain, rdfs:range, and rdfs:subPropertyOf. The class rdfs:Property is a subclass of rdfs:Resource, reflecting that properties are themselves resources.
The purpose of rdfs:Property is to enable meta-modeling and description of properties. Using rdfs:domain and rdfs:range,
In comparison with OWL, RDFS does not distinguish between object properties, datatype properties, or complete/functional properties;
Example: a property ex:knows can be declared as rdf:type rdfs:Property, and connected with ex:Person as its domain