PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Some materials such as steel, may be welded to similar steel materials as well as for aluminum, other materials may not be successfully friction welded.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com