@prefix rdf: . @prefix owl: . _:vb300640 rdf:type owl:Class ; owl:unionOf _:vb300642 . @prefix pwdr: . _:vb300640 pwdr:describedby . @prefix bibo: . _:vb300641 rdf:first bibo:Document ; rdf:rest rdf:nil ; pwdr:describedby . _:vb300642 rdf:first bibo:Collection ; rdf:rest _:vb300641 ; pwdr:describedby .