About: http://webisa.webdatacommons.org/339537531

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	Useful for when a non-null delegate is needed (perhaps to simplify callback or event invocation, as invoking on a null is an error), but you have nothing specific to do.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com