PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Even if NIL was a function (which clearly you mean NULL) The first IF would evaluate to 0 and then it will continue to the second if.
http://www.w3.org/ns/prov#wasQuotedFrom
  • lispforum.com