PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • There is an explanation.There is an article about it in the MAA journal, The American MathematicalMonthly.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mathforum.org