About: http://webisa.webdatacommons.org/442537108

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	I can not test it since I do not have the image but here is a blog post with some description and source code links which is supposed to handle it:
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com