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