About: http://webisa.webdatacommons.org/71218918

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	Because each tree is a collection of other trees, the recursive generating function becomes $$C(x) = x + xC(x) + xC(x)^2 ... = \sum_n x[C(x)]^n/{n!} = xe^{C(x)}$$
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com