Input (grade 11): Carlo Airoldi (Origgio, 21 September 1869 - Milan, 18 June 1929) was an Italian marathon runner, famous for walking to the 1896 Olympics.
Output (grade 10): Carlo Airoldi (21 September 1869 - 18 June 1929) was an Italian marathon runner, famous for walking to the 1896 Summer Olympics in Athens, Greece.