Complex sentence: When Peter Morton sold his Las Vegas Hard Rock Hotel to the Morgans Group, he also sold those naming rights, which then gave rise to two U.S. franchise Hotels (without cafes) in Albuquerque and Tulsa.
Split into simpler sentences: When Peter Morton sold his Las Vegas Hard Rock Hotel to the Morgans Group, he also sold those naming rights. Which then gave rise to two U.S. franchise Hotels (without cafes) in Albuquerque and Tulsa.