PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, the dunes also contain relatively high levels of naturally occurring radioactive material such as uranium, thorium, radium and polonium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • iol.co.za