PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • My present invention relates to a cleaning apparatus for carpetry, upholstery and the like of the type in which a housing, forming a cleaning head, is displaceable along the surface to be cleaned and has a suction compartment adapted to draw up dirt or other materials on this surface and deposit it in a collecting vessel.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com