Charlie is green. Dave is not green. Gary is green. Harry is cold. Harry is green. Harry is not round. Harry is young. If someone is green and round then they are young. If someone is not quiet then they are white. If someone is young then they are cold. If someone is rough and not quiet then they are round. If someone is round and not green then they are young. If someone is rough and white then they are not quiet. If Charlie is white then Charlie is rough. If Charlie is not white then Charlie is not quiet. If Harry is rough and Harry is not round then Harry is not young.
Harry is not quiet.