About: http://webisa.webdatacommons.org/232649917

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 need is a very strong word, and in a strict sense, the tables probably do not need surrogate keys.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com