About: http://webisa.webdatacommons.org/77074523

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	@Mr.Wizard I would prefer to not post this as an answer since my comment is tangential to the question being asked, but is a comment to @Alexey's observation.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com