@prefix rdf: . @prefix http-voc: . _:vb71666 rdf:type http-voc:MessageHeader . @prefix pwdr: . @prefix ns3: . _:vb71666 pwdr:describedby ns3:sparql . @prefix ns4: . _:vb71666 pwdr:describedby ns4:sparql . @prefix ns5: . _:vb71666 pwdr:describedby ns5:sparql , . @prefix ns6: . _:vb71666 http-voc:fieldName ns6:connection ; http-voc:fieldValue _:vb71729 . _:vb71729 rdf:type http-voc:HeaderElement ; pwdr:describedby ns5:sparql , ns3:sparql , , ns4:sparql ; http-voc:elementName "Keep-Alive" .