Sections 12.1-27.1-01 and 12.1-27.1-03 shall not apply to the possession or distribution of material in the course of law enforcement, judicial, or legislative activities; or to the possession of material by a bona fide school, college, university, museum, or public library for limited access for educational research purposes carried on at such an institution by adults only. Sections 12.1-27.1-01 and 12.1-27.1-03 shall also not apply to a person who is returning material, found to be obscene, to the distributor or publisher initially delivering it to the person returning it.