PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This invention is a system that creates a highly abrasive roof surface that prevents snow and ice from sliding off of smooth surface roofs and consists of a uniformly distributed aggregate matrix set in a cured liquid membrane that coats and bonds to the entire surface of a smooth roof where sliding snow is intended to be prevented.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com