PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Dialog and Datastar provide information on patents, trade marks and environmental information although it is worth noting that the material is mainly US origin.
http://www.w3.org/ns/prov#wasQuotedFrom
  • warwick.ac.uk