PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Finally, if by someone in the future you mean aliens from somewhere other than earth, then this problem is also easy to resolve: since we have not seen any aliens at all (roswell notwithstanding), it is unreasonable to expect to find alien time travelers.
http://www.w3.org/ns/prov#wasQuotedFrom
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