CREATE TABLE table_203_716 (id NUMBER, "rank" NUMBER, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

what country is the only country with at least 20 gold medals ?
SELECT "nation" FROM table_203_716 WHERE "gold" >= 20
SELECT "nation" FROM "table_203_716" WHERE "gold" >= 20