Bob is huge. Bob is big. Harry is little. Harry is tiny. Charlie is quiet. Gary is poor. Gary is dull. If someone is not high then they are poor. If someone is not bad then they are wealthy. If someone is quiet then they are nice. If someone is nice and not sad then they are kind. If someone is poor and not high then they are rough. All rough people are thin. If someone is little and tiny then they are sad. If someone is sad and not nice then they are dull. If someone is dull then they are young. If someone is wealthy then they are smart. All smart people are clever. All kind people are old. 
Bob is not thin.