Complex sentence: Bravo originally launched as a commercial-free premium channel on December 1,1980, it was originally owned by Cablevision's Rainbow Media division; the channel claimed to be "the first television service dedicated to film and the performing arts".
Split into simpler sentences: Bravo originally launched as a commercial-free premium channel on December 1,1980. It was originally owned by Cablevision's Rainbow Media division; the channel claimed to be "the first television service dedicated to film and the performing arts".