Dave is strong. Dave is high. Harry is short. Harry is small. Alan is wealthy. Gary is bad. Gary is dull. If someone is not huge then they are bad. If someone is not sad then they are kind. If someone is wealthy then they are nice. If someone is nice and not poor then they are smart. If someone is bad and not huge then they are rough. All rough people are thin. If someone is short and small then they are poor. If someone is poor and not nice then they are dull. If someone is dull then they are young. If someone is kind then they are quiet. All quiet people are clever. All smart people are old. 
Gary is not clever.