Bob is high. Bob is huge. Dave is tiny. Dave is small. Alan is clever. Charlie is poor. Charlie is rough. If someone is not strong then they are poor. If someone is not dull then they are nice. If someone is clever then they are wealthy. If someone is wealthy and not sad then they are smart. If someone is poor and not strong then they are bad. All bad people are thin. If someone is tiny and small then they are sad. If someone is sad and not wealthy then they are rough. If someone is rough then they are young. If someone is nice then they are quiet. All quiet people are kind. All smart people are old. 
Bob is not thin.