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