_:vb50857920	<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>	_:vb50857921 .
_:vb50857920	<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>	<http://www.w3.org/ns/prov#qualifiedInvalidation> .
<http://www.w3.org/ns/prov#wasInvalidatedBy>	<http://www.w3.org/2002/07/owl#propertyChainAxiom>	_:vb50857920 .