PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Each failure event signal may be declared by a comment of the form ???--!! n: ???failure message???;??? where n is an integer denoting which failure event the message is to be associated with and ???failure message??? is the message to be associated with the particular failure event.
http://www.w3.org/ns/prov#wasQuotedFrom
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