PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • To produce these hydrocarbons, a production system may utilize various devices, such as sand screens and other tools, for specific tasks within a well.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com