PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • knowledge that Bind will take care of checking them for null before passing them along.There are other examples of things you can do with a monad.
http://www.w3.org/ns/prov#wasQuotedFrom
  • msdn.com