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

What are the names of the ships that are not from the United States?
SELECT name FROM ship WHERE nationality <> "United States"
SELECT "name" FROM "ship" WHERE "United States" <> "nationality"