About: http://webisa.webdatacommons.org/240551416

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	I made a test and your code is ok, at least on jsfiddle: jsfiddle.net/ptDzd
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com