About: http://webisa.webdatacommons.org/120424547

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	Obviously the test function below is not going to be exactly what you want ... hopefully it will give you an idea as to how to tackle the problem.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com