Input (grade 13): The 1972 Summer Olympics, officially known as the Games of the XX Olympiad, were an international multi-sport event held in Munich, in what was then West Germany, from August 26 to September 11, 1972.
Output (grade 12): The 1972 Summer Olympics, officially known as the Games of the XX Olympiad, were held in Munich, in what was then West Germany, from 26 August to 11 September 1972.