PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In addition, NOV still keeps a unit in Houston so the company can continue to perform software upgrades and testing and other R&D.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillingcontractor.org