PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In the early days of paywalls, some content was free, while other content you needed to pay for; the meter, in theory, replaced that system with one where the determination as to whether an article was free or not was a function of how many other articles the reader had read, rather than being a function of the content of the article itself.
http://www.w3.org/ns/prov#wasQuotedFrom
  • artsjournal.com