PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Without a doubt, horizontal drilling is the most important innovation in oil and gas exploration during the past 50 years because it effectively represents the evolution of man-made technology to emulate nature.
http://www.w3.org/ns/prov#wasQuotedFrom
  • newdominion.net