About: http://webisa.webdatacommons.org/292259177

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	One additional column info parameter is used, extract, which is called as a method on the inserted object with the column name as the only argument.
http://www.w3.org/ns/prov#wasQuotedFrom	metacpan.org