About: http://webisa.webdatacommons.org/38906345

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 theory of types pioneered by Russell and Whitehead was simplified by mathematicians to a single distinction between sets and classes.
http://www.w3.org/ns/prov#wasQuotedFrom	philpapers.org