PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Among the harmful effects of aerial pollution are the acidification of streams and lakes, the toxic contamination of fish and birds, and the increased risks to people???s health caused by exposure to harmful substances such as lead and mercury.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nrdc.org