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