PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • From Wikipedia... http://en.wikipedia.org/wiki/Contract [wikipedia.org] If the terms of the contract are uncertain or incomplete, the parties cannot have reached an agreement in the eyes of the law.[19] An agreement to agree does not constitute a contract, and an inability to agree on key issues, which may include such things as price or safety, may cause the entire contract to fail.
http://www.w3.org/ns/prov#wasQuotedFrom
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