PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ML is often referred to as an impure functional language, because it allows side-effects, unlike purely functional programming languages such as Haskell.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org