About: http://webisa.webdatacommons.org/443898693

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	The US currently has 11 and the rest of the world has 10 (not including the one China has but does not call an aircraft carrier).
http://www.w3.org/ns/prov#wasQuotedFrom	economist.com