Alan is big. Alan is high. Bob is short. Bob is thin. Charlie is nice. Gary is rough. Gary is bad. If someone is not strong then they are rough. If someone is not poor then they are kind. If someone is nice then they are wealthy. If someone is wealthy and not sad then they are smart. If someone is rough and not strong then they are dull. All dull people are little. If someone is short and thin then they are sad. If someone is sad and not wealthy then they are bad. If someone is bad then they are young. If someone is kind then they are quiet. All quiet people are clever. All smart people are old. 
Bob is not young.