PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A Uniform Resource Locator (URL) is a text string that conforms to a well-defined standard syntax and embodies a general addressing protocol for web pages, email users, files, and other objects that are accessible via the Internet.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com