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