PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The reducer takes all the words and how many ones were emitted for each one, sums them up and returns another pair (key, value) where the key is a word and the value is the number of times that word was repeated in the text.
http://www.w3.org/ns/prov#wasQuotedFrom
  • igalia.com