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