Complex sentence: Wiseman distributes his own films (DVDs and 16mm prints) through Zipporah Films, which rents them to high schools, colleges, and libraries on a five-year long-term lease.
Split into simpler sentences: Wiseman distributes his own films (DVDs and 16mm prints) through Zipporah Films. His films are rented to high schools, colleges, and libraries on a five-year long-term lease.