Alan is strong. Alan is big. Fiona is small. Fiona is short. Dave is nice. Harry is poor. Harry is rough. If someone is not huge 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 huge then they are bad. If someone is small and short then they are dull. If someone is dull and not kind then they are rough. All quiet people are smart. 
Fiona is not rough.