@prefix rdf: . @prefix ns1: . _:vb773438 rdf:first ns1:qualifiedInvalidation ; rdf:rest _:vb773439 . @prefix pwdr: . @prefix ns3: . _:vb773438 pwdr:describedby ns3:prov . _:vb773439 rdf:first ns1:activity ; rdf:rest rdf:nil ; pwdr:describedby ns3:prov .