PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This is an old trick used in JavaScript and other weakly typed languages to force the result to a string. c# is strongly typed so this is not needed.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com