Pred.      Comment ::= Item "is" Quality
This.      Item    ::= "this" Kind 
That.      Item    ::= "that" Kind
Mod.       Kind    ::= Quality Kind 
Wine.      Kind    ::= "wine" 
Cheese.    Kind    ::= "cheese" 
Fish.      Kind    ::= "fish"
Very.      Quality ::= "very" Quality
Fresh.     Quality ::= "fresh" 
Warm.      Quality ::= "warm" 
Italian.   Quality ::= "Italian" 
Expensive. Quality ::= "expensive" 
Delicious. Quality ::= "delicious" 
Boring.    Quality ::= "boring"
