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