About: http://webisa.webdatacommons.org/220266816

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	ok...so my comment above was an epic fail. :) after reading your edit on the answer, I now understand what your code does.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com