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