PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Trade barriers can be economic in the form of tariffs, duties and other surcharges related to transactions (either import or export) or can be non-tariff-barriers in the form of rules and regulations as to how commerce is conducted.
http://www.w3.org/ns/prov#wasQuotedFrom
  • fao.org