PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • HECA would gasify the coal and petcoke, emitting dangerous pollutants into the air, such as carbon monoxide, nitrogen dioxide, volatile organic compounds, and particulate matter.
http://www.w3.org/ns/prov#wasQuotedFrom
  • hecainfo.com