CREATE TABLE table_29692 ("Team" TEXT, "Chairman" TEXT, "Head Coach" TEXT, "Captain" TEXT, "Kitmaker" TEXT, "Shirt sponsor" TEXT)

How many teams have a head coach named mahdi ali?
SELECT COUNT("Team") FROM table_29692 WHERE "Head Coach" = 'Mahdi Ali'
SELECT COUNT("Team") FROM "table_29692" WHERE "Head Coach" = 'Mahdi Ali'