Dave is red. Dave is white. Erin is green. Erin is quiet. Erin is red. Erin is white. Erin is young. Fiona is green. Fiona is quiet. Fiona is red. Fiona is white. Fiona is young. Gary is quiet. Gary is rough. Gary is smart. Gary is young. If something is young then it is rough. All rough things are smart. Red things are smart. All green, rough things are white. If something is green and young then it is white. If something is red and rough then it is smart.
Dave is not rough.