Input (grade 13): The 1996 Summer Olympics, officially known as the Games of the XXVI Olympiad and unofficially known as the Centennial Olympics, were an international multi-sport event which was celebrated in 1996 in Atlanta, Georgia, United States.
Output (grade 11): The 1996 Summer Olympics, officially known as the Games of the XXVI Olympiad, were celebrated in Atlanta, United States from July 19, through August 4.