@prefix foaf: . @prefix ns1: . ns1:lounge foaf:topic . @prefix sioc: . @prefix ns3: . ns3:lounge sioc:container_of . @prefix rdf: . @prefix schema: . rdf:type schema:SiteNavigationElement . @prefix pwdr: . @prefix ns7: . pwdr:describedby ns7:lounge , ns3:lounge . rdf:object . rdf:subject .