About: http://webisa.webdatacommons.org/396067519

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	???:The transaction ID epoch is not actually stored anywhere in the database except in the field that is set by pg_resetxlog, so any value will work so far as the database itself is concerned.
http://www.w3.org/ns/prov#wasQuotedFrom	postgresql.org