PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • All these tools are an effort to compromise between the projects' preference for free software ethics, which prohibit the shipping of elements with non-free licenses, even if they are available for free download, and the realization that many users will want these elements anyway.
http://www.w3.org/ns/prov#wasQuotedFrom
  • linux.com