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