Among the bakeries, what is total number of bakery located at University Avenue, Palo Alto?
bakery refers to food_type = 'bakery'; University Avenue refers to street_name = 'university ave.'; Palo Alto refers to city = 'palo alto'
SELECT COUNT(T1.id_restaurant) FROM location AS T1 INNER JOIN generalinfo AS T2 ON T1.id_restaurant = T2.id_restaurant WHERE T2.food_type = 'bakery' AND T2.city = 'palo alto' AND T1.street_name = 'university ave.'