PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A method for communicating operating, environmental and directional parameters from near a drill bit, around a motor, to the surface of a well, including the steps of:(a) sensing at least one of said parameters; (b) transmitting an electromagnetic signal indicative of said sensed parameter a relatively short distance from below the motor; (c) receiving the electromagnetic signal at a point above t
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com