CREATE TABLE table_204_727 (id DECIMAL, "rank" DECIMAL, "nation" TEXT, "gold" DECIMAL, "silver" DECIMAL, "bronze" DECIMAL, "total" DECIMAL)

name the countries that did not win any gold medals .
SELECT "nation" FROM table_204_727 WHERE "gold" = 0
SELECT "nation" FROM "table_204_727" WHERE "gold" = 0