About: http://webisa.webdatacommons.org/217428737

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	How do you distinguish this from the effects of trade policy at the time, both that of the US, and other countries in the world?
http://www.w3.org/ns/prov#wasQuotedFrom	econlib.org