About: http://webisa.webdatacommons.org/329909252

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	One thing I noticed in your sample manual test was how you are checking the results:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com