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