PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Service companies provide information including logging-while-drilling (LWD) measurements, measurement-while-drilling (MWD) data, marine management factors, and information regarding such other operations as directional drilling parameters and constraints, and completion and cementing parameters.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freshpatents.com