PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The invention further relates to oil and gas production systems with reduced environmental impact based on utilization of naturally occurring energy and other forces in the well and the process.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com