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