Bob is big. Bob is high. Fiona is short. Fiona is thin. Dave is kind. Erin is bad. Erin is poor. If someone is not strong then they are bad. If someone is not sad then they are quiet. If someone is kind then they are wealthy. If someone is wealthy and not dull then they are nice. If someone is bad and not strong then they are rough. All rough people are small. If someone is short 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 quiet then they are clever. All clever people are smart. All nice people are experienced. 
Erin is not smart.