CREATE TABLE table_49831 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

Which Manufacturer has a Rider of daijiro kato?
SELECT "Manufacturer" FROM table_49831 WHERE "Rider" = 'daijiro kato'
SELECT "Manufacturer" FROM "table_49831" WHERE "Rider" = 'daijiro kato'