About: http://webisa.webdatacommons.org/97587313

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	systems such as Mizar show that one can still provide fairly readable proof
http://www.w3.org/ns/prov#wasQuotedFrom	rbjones.com