About: http://webisa.webdatacommons.org/439947619

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 important thing is that you can couple the $action to the output clause and get information about whether you merged the data or you inserted the data, meaning whether the row was matched or not matched.
http://www.w3.org/ns/prov#wasQuotedFrom	execsql.com