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