PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • However, there is a problem that gradually starts to accumulate with students who can not do math at a reasonable speed.
http://www.w3.org/ns/prov#wasQuotedFrom
  • slashdot.org