PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Note that inclusion of library modules is better done with the use() and require() operators, which also do error checking and raise an exception if there is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cpan.org