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