_:ont a <http://www.w3.org/2002/07/owl#Ontology> .
_:x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://www.w3.org/2002/07/owl#Axiom> .
_:x <http://www.w3.org/2002/07/owl#annotatedSource>
<http://example.org/myOnt/hasAunt> .
_:x <http://www.w3.org/2002/07/owl#annotatedProperty>
<http://www.w3.org/2002/07/owl#propertyChainAxiom> .
_:x <http://www.w3.org/2002/07/owl#annotatedTarget> _:y1 .
_:x <http://www.w3.org/2000/01/rdf-schema#comment> "An aunt is a mother's sister." .
<http://example.org/myOnt/hasAunt>
<http://www.w3.org/2002/07/owl#propertyChainAxiom> _:y1 .
_:y1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://example.org/myOnt/hasMother> .
_:y1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest> _:y2 .
_:y2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://example.org/myOnt/hasSister> .
_:y2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil> .
<http://example.org/myOnt/hasAunt> a
<http://www.w3.org/2002/07/owl#ObjectProperty> .
<http://example.org/myOnt/hasMother> a
<http://www.w3.org/2002/07/owl#ObjectProperty> .
<http://example.org/myOnt/hasSister> a
<http://www.w3.org/2002/07/owl#ObjectProperty> .