@prefix : <http://example.org/test#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

<http://example.org/test> a owl:Ontology .

:X a owl:DatatypeProperty .
:Y a owl:Class .
:Y rdfs:subClassOf :X .
