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