How many restaurant is the Sandwich type restaurant?
SELECT count(*) FROM Restaurant JOIN Type_Of_Restaurant ON Restaurant.ResID =  Type_Of_Restaurant.ResID JOIN Restaurant_Type ON Type_Of_Restaurant.ResTypeID = Restaurant_Type.ResTypeID GROUP BY Type_Of_Restaurant.ResTypeID HAVING Restaurant_Type.ResTypeName = 'Sandwich'
Sandviç tipi restoran kaç restoran?