PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • As a heavy metal, uranium, plutonium, neptunium and other metals likely to contaminate water in a nuclear reactor are extremely toxic, much more so than an equivalent weight of lead, cadmium or selenium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • democraticunderground.com