PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Unlike its primary Open Source competitor it is truly ACID compliant and offers features such as triggers, stored procedures, domain constraints and an open development model.
http://www.w3.org/ns/prov#wasQuotedFrom
  • postgresql.org