PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • They contain 53 million gallons of heavy metals, acids, solvents and highly radioactive elements, including plutonium, cesium, strontium and uranium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • washingtonpost.com