About: http://webisa.webdatacommons.org/115265775

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 that n is a positive integer and that X1, X2, ... ,Xn are finite sets; furthermore we are given maps f1 : X1 ??? X2, f2 : X2 ??? X3, ... , fn-1 : Xn-1 ??? Xn.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net