CREATE TABLE table_203_724 (id NUMBER, "rank" NUMBER, "nation" CLOB, "gold" NUMBER, "silver" NUMBER, "bronze" NUMBER, "total" NUMBER)

what is the only country ranked in the top ten that did not earn a silver medal ?
SELECT "nation" FROM table_203_724 WHERE "rank" <= 10 AND "silver" = 0
SELECT "nation" FROM "table_203_724" WHERE "rank" <= 10 AND "silver" = 0