Consider the following sentence:

basket
  (a 
    (o 
       ()) 
	  )

and the output when the entire basket object is displayed
using the DisplayVisitor:

: Basket  (
	<fl> : NFruitList  (
		<first> : Apple  ( )
		<rest> : NFruitList  (
			<first> : Orange  ( )
			<rest> : EFruitList  ( ) ) ) ) done 

Guess the class dictionary?
Find the UNKNOWNs below.


Basket = "basket" <fl> FruitList.
FruitList : EFruitList | NFruitList.
EFruitList = "()".
NFruitList = "(" <first> Fruit <rest> FruitList ")".
Fruit : Apple | Orange.
Apple = "a".
Orange = "o".

Main = .