About: http://webisa.webdatacommons.org/344862807

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	If your code works for one url and not the other, I would suggest that the problem is in the redirect rather than in your code.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com