About: http://webisa.webdatacommons.org/438984426

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	Since your task is a very simple one, you may not want to use an extra library, but keep that in your mind.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com