About: http://webisa.webdatacommons.org/188554744

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	Some currencies, such as the North Korean won, the Transnistrian ruble and the Cuban national peso, are officially nonconvertible and can only be exchanged on the black market.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org