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