PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Oil is retreating as well, but seems mostly WTI relative to Brent as the XOM spill threatens increased rhetoric against Keystone XL.
http://www.w3.org/ns/prov#wasQuotedFrom
  • businessinsider.com