PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • I can not find a dead-on example on schema.org, and it will take forever if I have to publish the content live, then wait for Google to say there is a problem, then re-attempt it, then wait again, etc.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com