PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I deviated from your spec in that the function he is used to create a thunk is allowed to return another thunk; force will keep evaluating until the result is a nil or a cons.
http://www.w3.org/ns/prov#wasQuotedFrom
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