Complex sentence: Mellow Mushroom Pizza Bakers is a pizzeria that was established in Atlanta, Georgia in 1974 and operates as a restaurant franchise with over 150 locations throughout the United States.
Split into simpler sentences: Mellow Mushroom Pizza Bakers is a restaurant chain that was established in Atlanta, Georgia as a single pizzeria in 1974. It operates as a restaurant franchise with over 150 locations throughout the United States.