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