Dave is nice. Dave is not rough. Erin is green. Erin is nice. Gary is green. Gary is not kind. Gary is smart. Rough, green people are nice. Rough, white people are not smart. If someone is green and rough then they are kind. All rough, young people are white. If Dave is young then Dave is not kind. All young people are rough. If someone is white and green then they are kind. If someone is smart and nice then they are green.
Erin is not rough.