PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • RSS (originally RDF Site Summary, often dubbed Really Simple Syndication) is a family of web feed formats used to publish frequently updated works???such as blog entries, news headlines, audio, and video???in a standardized format.[2] An RSS document (which is called a feed, web feed,[3] or channel) includes full or summarized text, plus metadata such as publishing dates and authorship.
http://www.w3.org/ns/prov#wasQuotedFrom
  • tugmcgraw.org