PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The square root of 2 is an irrational number because it can not be written as a ratio of two integers.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mathforum.org