The standards established in this chapter shall not be construed to restrict or prohibit the following activities or products: (a) expressive dance; (b) plays, operas, musicals, or other dramatic works; (c) classes, seminars, or lectures conducted for a scientific or educational purpose; (d) printed materials or visual representations intended for educational or scientific purposes; (e) nudity within a locker room or other similar facility used for changing clothing in connection with athletic or exercise activities; (f) nudity within a hospital, clinic, or other similar medical facility for health-related purposes; and (g) all movies and videos that are rated G, PG, PG-13, R and NC-17 by the Motion Picture Association of America. (Ord. 743 § 17, 1996).