_:vb56969 . _:vb56970 "application/rdf+xml; q=1.0, text/rdf+n3; q=0.9, application/rdf+turtle; q=0.5, application/x-turtle; q=0.6, application/turtle; q=0.5, text/turtle; q=1.0, application/xml; q=0.2, */*; q=0.1" . _:vb56972 _:vb56971 . _:vb56967 . _:vb56971 _:vb56969 . _:vb56968 . _:vb56969 _:vb56970 . _:vb56970 . _:vb56972 _:vb56967 . _:vb56968 "OpenLink Virtuoso RDF crawler" . _:vb56967 _:vb56968 . _:vb56969 . _:vb56971 . _:vb56967 .