About: http://webisa.webdatacommons.org/82691027

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	You can either craft one yourself (as long as the object is a reference to a blessed hash) or use the simple one that Attribute::Property provides:
http://www.w3.org/ns/prov#wasQuotedFrom	drdobbs.com