PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It was heavily contaminated with PCBs from industries on its banks.The Grand Calumet River and Indiana Harbor Canal in northwestern Indiana: Surrounded by major industries, including steel, chemicals, and oil refining, the river and harbor are heavily polluted with both organic chemicals and heavy metals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • epa.gov