PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • INSERT ??? ON DUPLICATE KEY UPDATE is better since it does not delete the row, preserving any auto_increment columns and other data.
http://www.w3.org/ns/prov#wasQuotedFrom
  • stackoverflow.com