About: http://webisa.webdatacommons.org/154962790

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	The relative product R|S of two relations R and S is a relation such that x R|S y if and only if there is a z (in the universe of discourse) such that xRz and zSy.
http://www.w3.org/ns/prov#wasQuotedFrom	ditext.com