Fiona is huge. Fiona is strong. Alan is short. Alan is small. Gary is kind. Dave is poor. Dave is dull. If someone is not big then they are poor. If someone is not sad then they are nice. If someone is kind then they are quiet. If someone is quiet and not bad then they are wealthy. If someone is poor and not big then they are rough. If someone is short and small then they are bad. If someone is bad and not quiet then they are dull. All nice people are smart. 
Dave is smart.