PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Unfortunately, one of the drawbacks to this approach is that you can???t quickly send queries to more than one source for a given code type.
http://www.w3.org/ns/prov#wasQuotedFrom
  • gigaom.com