@prefix rdf: . @prefix http-voc: . _:vb356592 rdf:type http-voc:HeaderElement . @prefix pwdr: . @prefix ns3: . _:vb356592 pwdr:describedby ns3:sparql . @prefix ns4: . _:vb356592 pwdr:describedby ns4:sparql , . @prefix ns5: . _:vb356592 pwdr:describedby ns5:sparql ; http-voc:elementName "OpenLink Virtuoso RDF crawler" . _:vb356606 rdf:type http-voc:MessageHeader ; pwdr:describedby ns3:sparql , ns4:sparql , , ns5:sparql . @prefix ns6: . _:vb356606 http-voc:fieldName ns6:user-agent ; http-voc:fieldValue _:vb356592 .