Dave is high. Dave is strong. Alan is tiny. Alan is short. Anne is quiet. Erin is poor. Erin is dull. If someone is not huge 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 nice. If someone is poor and not huge then they are rough. All rough people are small. If someone is tiny and short 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 kind. All nice people are old. 
Alan is not young.