PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • is not it possible to allow developers to use any function as long it matches the types of 'order' or 'group'?
http://www.w3.org/ns/prov#wasQuotedFrom
  • haskell.org