CREATE TABLE table_68368 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

Which manufacturer made Shoya Tomizawa's motorcycle?
SELECT "Manufacturer" FROM table_68368 WHERE "Rider" = 'shoya tomizawa'
SELECT "Manufacturer" FROM "table_68368" WHERE "Rider" = 'shoya tomizawa'