PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Google is known for offering its apps and services such as Gmail, Docs, and Books for free, so taking on a business that already includes a paid service may be a bit tricky.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sparxoo.com