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