subject	object
http://www.openlinksw.com/schemas/virtrdf#DefaultQuadStorage	http://www.openlinksw.com/schemas/virtrdf#DefaultQuadStorage-UserMaps
http://www.openlinksw.com/schemas/virtrdf#DefaultServiceStorage	http://www.openlinksw.com/schemas/virtrdf#DefaultServiceStorage-UserMaps
http://www.openlinksw.com/schemas/virtrdf#SyncToQuads	http://www.openlinksw.com/schemas/virtrdf#SyncToQuads-UserMaps