About: http://webisa.webdatacommons.org/210678044

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	PostgreSQL version 9.1 (beta at this moment) might fix your problem, but only if there is a functional dependency on the primary key.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com