Otryadyn Gündegmaa, is a Mongolian sports shooter, she competed in 10 m and 25 m pistol events at the 1996 Summer Olympics, known officially as the Games of the XXVI Olympiad and unofficially as the Centennial Olympic Games, was a major international multi-sport event that took place in Atlanta, Georgia, from July 19 to August 4, 1996, in which country?