PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Casing pressure is a term used to describe the buildup in gas pressure between the casing, or outer walls, and tubing of a well.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wisegeek.com