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