_:vb915421	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/ns/prov#qualifiedDerivation> .
_:vb915421	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb915420 .
<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://www.w3.org/2002/07/owl#propertyChainAxiom>	_:vb915421 .