_:b13020 . _:b13020 . _:b13019 _:b13242 . _:b13019 . _:b13242 . _:b13507 _:b13019 . _:b13243 "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" . _:b13019 . _:b13242 "OpenLink Virtuoso RDF crawler" . _:b13508 . _:b13243 . _:b13020 . _:b13019 . _:b13508 _:b13020 . _:b13020 _:b13243 . _:b13242 . _:b13507 _:b13508 . _:b13243 .