Dave is quiet. Dave is rough. Dave is round. Dave is smart. Erin is red. Erin is rough. Erin is white. Harry is cold. Harry is round. Harry is smart. If something is rough and quiet then it is cold. If something is white and red then it is quiet. If something is rough then it is white. If something is round then it is rough. If something is rough and white then it is red. If something is red and round then it is white.
Erin is not rough.