CREATE TABLE table_204_392 (id DECIMAL, "#" DECIMAL, "stadium" TEXT, "capacity" DECIMAL, "city" TEXT, "country" TEXT, "domed or retractable roof" TEXT)

which country has the smallest capacity stadium ?
SELECT "country" FROM table_204_392 ORDER BY "capacity" LIMIT 1
SELECT "country" FROM "table_204_392" ORDER BY "capacity" NULLS FIRST LIMIT 1