Complex sentence: Also on the August 31 edition "Raw", Seth Rollins was issuing an open challenge to Sting to confront him in the ring and demand the location for his statue that was promised to him for defeating John Cena at SummerSlam.
Split into simpler sentences: Also on the August 31 edition of "Raw", Seth Rollins was in the middle of issuing a challenge to Sting. Rollins demanded that Sting show up and tell him the location for his statue that was promised to him for defeating John Cena at SummerSlam.