PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • It is reliable if it can be depended upon by users to represent faithfully what it either purports to represent or could reasonably be expected to rep- resent and therefore re???ects the substance of transactions and other events that have taken place; it is free from deliberate or systematic bias and material error and is complete; and if prepared under conditions of uncertainty, a degree of caut
http://www.w3.org/ns/prov#wasQuotedFrom
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