About: http://webisa.webdatacommons.org/176025611

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	Suppose A is a set and S is a collection of subsets closed under arbitrary unions and intersections.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net