PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In another example, gas, such as carbon dioxide, is injected into the second well to increase the pressure in the reservoir to attempt to loosen the remaining hydrocarbons.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com