PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As described, the rig???s drinking water system can be complex, consisting of items such as tanks, piping, filters, etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillingcontractor.org