CREATE TABLE table_204_554 (id DECIMAL, "rank" DECIMAL, "name" TEXT, "nation" TEXT, "time" TEXT, "speed" DECIMAL, "note" TEXT)

which country had more athletes , belarus or lithuania ?
SELECT "nation" FROM table_204_554 WHERE "nation" IN ('belarus', 'lithuania') GROUP BY "nation" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "nation" FROM "table_204_554" WHERE "nation" IN ('belarus', 'lithuania') GROUP BY "nation" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1