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