Bob is strong. Bob is huge. Fiona is little. Fiona is thin. Dave is quiet. Charlie is sad. Charlie is dull. If someone is not big then they are sad. 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 sad and not big then they are rough. If someone is little and thin then they are bad. If someone is bad and not kind then they are dull. All nice people are smart. 
Charlie is smart.