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