@prefix rdf: . @prefix owl: . _:vb585843 rdf:type owl:Restriction . @prefix bibo: . _:vb585843 owl:allValuesFrom bibo:Slide . @prefix dcterms: . _:vb585843 owl:onProperty dcterms:hasPart . @prefix pwdr: . @prefix ns5: . _:vb585843 pwdr:describedby ns5:abstract .