subject	object
http://www.openlinksw.com/schemas/virtrdf#DefaultQuadStorage	http://www.openlinksw.com/schemas/virtrdf#DefaultQuadMap
http://www.openlinksw.com/schemas/virtrdf#TmpQuadStorage	http://www.openlinksw.com/schemas/virtrdf#TmpQuadMap
http://www.openlinksw.com/schemas/virtrdf#DefaultServiceStorage	http://www.openlinksw.com/schemas/virtrdf#DefaultServiceMap