PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Consider the case of coal ash: produced in stupendous quantities by coal-burning power plants, it contains dangerous concentrations of arsenic, lead, mercury and other toxic metals.
http://www.w3.org/ns/prov#wasQuotedFrom
  • truth-out.org