_:vb917021	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/ns/prov#qualifiedDerivation> .
_:vb917021	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb917020 .
<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://www.w3.org/2002/07/owl#propertyChainAxiom>	_:vb917021 .