Complex sentence: Fifteen years later, in 1997, Puck and Lazaroff opened the award-winning Spago in Beverly Hills, which has been recognized as one of the Top 40 Restaurants in the U.S. since 2004.
Split into simpler sentences: Fifteen years later, in 1997, Puck and Lazaroff moved the award-winning Spago to Beverly Hills. It has been recognized as one of the Top 40 Restaurants in the U.S. since 2004.