PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The first phase was to apportion blame among BP and its contractors, including Halliburton, which made the cement used to seal the Macondo well;
http://www.w3.org/ns/prov#wasQuotedFrom
  • abovetopsecret.com