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