PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Everyone (environmentalists, EPA, power companies) agree that the sulfur and mercury pollutants of coal-fired plants are an environmental problem, but the technologies for scrubbing those pollutants are relatively well known.
http://www.w3.org/ns/prov#wasQuotedFrom
  • realclimate.org