CREATE TABLE table_204_352 (id DECIMAL, "pos" TEXT, "no" DECIMAL, "rider" TEXT, "manufacturer" TEXT, "laps" DECIMAL, "time" TEXT, "grid" DECIMAL, "points" DECIMAL)

who is marco simoncelli 's manufacturer
SELECT "manufacturer" FROM table_204_352 WHERE "rider" = 'marco simoncelli'
SELECT "manufacturer" FROM "table_204_352" WHERE "rider" = 'marco simoncelli'