Dave is blue. Dave is kind. Dave is red. Dave is rough. Dave is white. Erin is blue. Erin is red. Erin is white. Erin is young. Fiona is blue. Fiona is not furry. Fiona is not kind. Fiona is red. Fiona is rough. Fiona is white. Fiona is young. All white, young people are not furry. If someone is not furry then they are young. If someone is furry and not white then they are not red. If someone is white and not young then they are blue. If someone is white and not blue then they are rough. If someone is not rough then they are red.
Dave is not rough.