<http://www.w3.org/ns/prov#used>	<http://www.w3.org/2002/07/owl#propertyChainAxiom>	_:vb910721 .
_:vb910721	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/ns/prov#qualifiedUsage> .
_:vb910721	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb910720 .