About: http://webisa.webdatacommons.org/137159654

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	In your code, the two instances with concrete types are as specific as it gets, so there should not be any problems.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com