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