Bob is not rough. Charlie is quiet. Erin is quiet. Erin is round. Erin is smart. Erin is young. Gary is quiet. Red things are not rough. If something is quiet and nice then it is red. If Bob is round then Bob is rough. If something is round and not quiet then it is not rough. If Erin is round then Erin is nice. If something is quiet and not red then it is not round. If something is not young and not nice then it is not round. If something is young and not red then it is not round.
Charlie is not red.