class Pasta {}
class Sauce {}
class Entree
{
    Sauce getSauce();
    Pasta getPasta();
}        
class Soda {}
class Pepsi extends Soda {}
class DietPepsi extends Pepsi {}
class PepsiFree extends Pepsi {}
class Dinner 
{
    Dinner(Soda s, Entree e);
}
class Mexican extends Dinner
{
    Pepsi p;
    void setPepsi(Pepsi p);
}
class Italian extends Dinner
{
    Italian(Sauce s, Pasta p);
    Soda getSoda();
}