PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The company also said it was pressuring suppliers of gold, tungsten and tin to use conflict-free materials that go in to its products, which are mostly made overseas.
http://www.w3.org/ns/prov#wasQuotedFrom
  • upi.com