PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In addition to air pollution, coal-fired power plants generate millions of tons of waste every year contaminated with toxic metals including lead, mercury, arsenic, chromium, and selenium ??? more than two-thirds of which is dumped into landfills, storage ponds, or old mines.
http://www.w3.org/ns/prov#wasQuotedFrom
  • thinkprogress.org