PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Pipeline access and / or transportation issues are an even bigger challenge in many of the highly active plays. 40-50% of wells drilled in the past year in the US are currently not yet producing.
http://www.w3.org/ns/prov#wasQuotedFrom
  • drillinginfo.com