About: http://webisa.webdatacommons.org/140519266

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	In particular, the image of $x$ under this class function is a set, and the image of $x$ under this class function is a set $A$ of ordinals with the property that for each $y\in x$ there is an $\alpha\in A$ such that $y\in V_\alpha$.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com