PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The polymer/Poroseal fluid system has shown high tolerance to contamination from the formations drilled and provided a fluid to a market where cost is an issue.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillingcontractor.org