PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Improved oil recovery systems, for example, and other intangible drilling costs", upgrading of processing equipment, and storage facilities.
http://www.w3.org/ns/prov#wasQuotedFrom
  • transnational-research.com