PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In mathematics, a conjecture is a conclusion or proposition which appears to be correct based on incomplete information, but for which no proof has been found.[1][2] Conjectures such as the Riemann hypothesis or Fermat's Last Theorem have shaped much of mathematical history as new areas of mathematics are developed in order to solve them.
http://www.w3.org/ns/prov#wasQuotedFrom
  • wikipedia.org