About: http://webisa.webdatacommons.org/137150070

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	Any operations made to sets such as a difference set, a cross set, a direct sum, a direct product, etc. may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com