Anne is high. Anne is huge. Bob is short. Bob is thin. Fiona is nice. Alan is poor. Alan is rough. If someone is not big then they are poor. If someone is not sad then they are quiet. If someone is nice then they are kind. If someone is kind and not dull then they are wealthy. If someone is poor and not big then they are bad. If someone is short and thin then they are dull. If someone is dull and not kind then they are rough. All quiet people are smart. 
Alan is not smart.