PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cutting tools can be formed from powders, such as tungsten-carbide, tungsten-nitride and the like.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com