Dave is huge. Dave is strong. Fiona is small. Fiona is thin. Charlie is nice. Bob is sad. Bob is dull. 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 kind. If someone is kind and not poor then they are wealthy. If someone is sad and not big then they are bad. If someone is small and thin then they are poor. If someone is poor and not kind then they are dull. All quiet people are smart. 
Bob is smart.