Anne is rough. Anne is smart. Charlie is rough. Charlie is smart. Dave is blue. Dave is furry. Dave is rough. Dave is white. Fiona is nice. Fiona is smart. All blue, rough people are white. Smart people are cold. Furry people are blue. If someone is cold and smart then they are furry. If someone is cold and blue then they are rough. White people are blue.
Fiona is not white.