title: 24 Hours of Le Mans
context: The 24 Hours of Le Mans (French: 24 Heures du Mans) is the world's oldest active sports car race in endurance racing, held annually since 1923 near the town of Le Mans, France.[1] It is considered one of the most prestigious automobile races in the world and has been called the "Grand Prix of Endurance and Efficiency".[2] The event represents one leg of the Triple Crown of Motorsport; other events being the Indianapolis 500 and the Monaco Grand Prix.
question: When was the first 24 Hours of Le Mans?
answers: 1923