Bob is huge. Bob is big. Fiona is tiny. Fiona is short. Alan is quiet. Dave is bad. Dave is rough. If someone is not high then they are bad. If someone is not sad then they are kind. If someone is quiet then they are nice. If someone is nice and not dull then they are clever. If someone is bad and not high then they are poor. All poor people are thin. If someone is tiny and short then they are dull. If someone is dull and not nice then they are rough. If someone is rough then they are young. If someone is kind then they are wealthy. All wealthy people are smart. All clever people are old. 
Alan is not old.