PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Not sure how it will fair with the subjective-sounding question embedded in the post, although it seems like there are a number of very objective answers.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com