About: http://webisa.webdatacommons.org/111961287

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	operations on sets such as intersection, union, difference, and symmetric
http://www.w3.org/ns/prov#wasQuotedFrom	wingware.com