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