_:vb909521	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/ns/prov#qualifiedUsage> .
_:vb909521	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb909520 .
<http://www.w3.org/ns/prov#used>	<http://www.w3.org/2002/07/owl#propertyChainAxiom>	_:vb909521 .