About: http://webisa.webdatacommons.org/359480633

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	Admittedly this is a guess, but if you are passing the same value, such as true every time this may be where it hangs.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com