@prefix ex: <http://example.org/ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .

_:rdfs04 a owl:Ontology .
 
ex:a a owl:NamedIndividual .
ex:c1 a owl:Class .
ex:c2 a owl:Class .

ex:a rdf:type ex:c1 .
ex:c1 rdfs:subClassOf ex:c2 .

