CREATE TABLE mission (mission_id DECIMAL, ship_id DECIMAL, code TEXT, launched_year DECIMAL, location TEXT, speed_knots DECIMAL, fate TEXT)
CREATE TABLE ship (ship_id DECIMAL, name TEXT, type TEXT, nationality TEXT, tonnage DECIMAL)

List the name of ships whose nationality is not 'United States'.
SELECT name FROM ship WHERE nationality <> "United States"
SELECT "name" FROM "ship" WHERE "United States" <> "nationality"