About: http://webisa.webdatacommons.org/85653910

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 problem is a subtle bug in the way you are calling it or how you have set unique constraints on the table, and you are likely going to be scratching your head on receipt of either the integrity error or the does not exist.
http://www.w3.org/ns/prov#wasQuotedFrom	djangoproject.com