PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The present invention is a method, system, and computer program product to make query processing more robust in the face of optimization errors, and is termed Progressive Query Processing (PQP).
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com