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