CREATE TABLE table_204_822 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

which nation won the least number of bronze medals ?
SELECT "nation" FROM table_204_822 ORDER BY "bronze" LIMIT 1
SELECT "nation" FROM "table_204_822" ORDER BY "bronze" NULLS FIRST LIMIT 1