PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In logic, answering no to that question is the same as saying that there is an element in the empty list that classifies as false, that is, the empty list contains nil.
http://www.w3.org/ns/prov#wasQuotedFrom
  • lispforum.com