CREATE TABLE table_name_56 (silver NUMBER, bronze VARCHAR2, gold VARCHAR2)

What is the fewest number of silvers for teams with more than 21 gold and more than 4 bronze?
SELECT MIN(silver) FROM table_name_56 WHERE bronze > 4 AND gold > 21
SELECT MIN("silver") FROM "table_name_56" WHERE "bronze" > 4 AND "gold" > 21