PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • measure dynamic drillstring conditions, and monitor the various components of the drill string including the condition of the drill bit, mud motor, bearing assembly and any other component part of the system.
http://www.w3.org/ns/prov#wasQuotedFrom
  • patents.com