About: http://webisa.webdatacommons.org/183303884

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	So, he claims to be able to do this for any number, including fractions, and get the perfect value, not an approximation....
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com