PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Another development is further riserless drilling, which means that instead of running the riser, drilling can continue deeper with the same sort of system.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillingcontractor.org