Original: WrestleMania 21 was the first WrestleMania held at the Staples Center, but the fifth to take place in the Southern California metropolitan area (following WrestleMania 2, WrestleMania VII, WrestleMania XII, and WrestleMania 2000).
Simplified: WrestleMania 21 was the first WrestleMania held at the Staples Center, but the fifth to take place in the Southern California metropolitan area (following WrestleMania 2, WrestleMania VII, WrestleMania XII and WrestleMania 2000).