@prefix rdf: . @prefix bibo: . _:vb585714 rdf:first bibo:Document ; rdf:rest rdf:nil . @prefix pwdr: . @prefix ns3: . _:vb585714 pwdr:describedby ns3:abstract . _:vb585715 rdf:first bibo:Collection ; rdf:rest _:vb585714 ; pwdr:describedby ns3:abstract .