About: http://webisa.webdatacommons.org/404746534

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	First, you have to specify file for filename and only load file (with load, that can be e.g. Import), if file is not $Canceled (use UnsameQ instead of NotEqual).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com