PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Possibility that the material you were welding had some coating, oil, or other crap on it that was making you sick.
http://www.w3.org/ns/prov#wasQuotedFrom
  • weldingweb.com