PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Coal-fired electric generating facilities are a major source of air emissions, including sulfur dioxide (SO 2), nitrogen oxides (NOX), particulate matter (PM), mercury, and carbon dioxide (CO2).
http://www.w3.org/ns/prov#wasQuotedFrom
  • policyarchive.org