CREATE TABLE table_71708 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time/Retired" TEXT, "Grid" FLOAT)

What is the Manufacturer for simone corsi?
SELECT "Manufacturer" FROM table_71708 WHERE "Rider" = 'simone corsi'
SELECT "Manufacturer" FROM "table_71708" WHERE "Rider" = 'simone corsi'