About: http://webisa.webdatacommons.org/393721629

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	I didn't realize this point until I am almost done with my programs, now my code is consisted of the following kinds of patterns:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com