About: http://webisa.webdatacommons.org/53817410

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	You???d also need to factor in things like standard of living, diets and other stuff which might make the study impossible, but it would be interesting.
http://www.w3.org/ns/prov#wasQuotedFrom	everything-everywhere.com