About: http://webisa.webdatacommons.org/160273113

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 think this distinction is the most important one, as opposed to distinguishing between in-house development versus software for general distribution.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com