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