About: http://webisa.webdatacommons.org/316434862

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 can store a reference to a Circle, yes, because a Circle is a kind of Shape and therefore a reference to a Circle may be used where a reference to a Shape is needed.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com