PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • use base is also very useful when your class is not an actual module (a separate file) but just a package in some file that has already been loaded. base will work whether the class is a module or not, while the -base syntax cannot work that way, since use always tries to load a module.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cpan.org