PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For more information about the other types of references (e.g. coderef, arrayref etc), see this question: http://stackoverflow.com/questions/1399833/how-can-i-get-perls-ref-function-to-return-ref-io-and-lvalue and perldoc perlref.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com