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