About: http://webisa.webdatacommons.org/126655163

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	Not only you have to normalize for prices, but take into accouint subsidies that are in place for energy, basic foodstuff (grains, sugar, and animal protein) in both types of systems.
http://www.w3.org/ns/prov#wasQuotedFrom	djavadsalehi.com