PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • But they underscore the appeal of rules about to be finalized at the EPA, which would require natural gas producers to prevent leaks from wells, pipelines, storage tanks and other infrastructure.
http://www.w3.org/ns/prov#wasQuotedFrom
  • washingtonpost.com