Harry is huge. Harry is strong. Dave is thin. Dave is tiny. Bob is smart. Erin is poor. Erin is dull. If someone is not high then they are poor. If someone is not sad then they are wealthy. If someone is smart then they are nice. If someone is nice and not bad then they are kind. If someone is poor and not high then they are rough. All rough people are small. If someone is thin and tiny then they are bad. If someone is bad and not nice then they are dull. If someone is dull then they are young. If someone is wealthy then they are clever. All clever people are quiet. All kind people are experienced. 
Dave is young.