PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Statistics can be out of date or have missing statistics, the optimizer might guess" rather than leveraging statistics, the distribution of statistics may not be optimal, and other conditions can occur where the query plan is not constructed to best leverage statistics.
http://www.w3.org/ns/prov#wasQuotedFrom
  • sqlpass.org