PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, it is true when we examine issues in epistemology and logic, that there is a such thing as an invalid question.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackexchange.com