About: http://webisa.webdatacommons.org/76595392

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	It is not however impossible - Facebook does something similar every time they fetch a page that a user links on their wall, and other sites surely do similar such things.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com