<prompt> Translate the following text to EnglishMwaka 1920, askari asiyejulikana wa Vita vya Kwanza vya Ulimwengu alizikwa katika uwanja wa St. Georges Arch, na mwaka wa 1920, moto wa milele ulizimwa.  <response>: In 1920, the Unknown Soldier of World War I was buried at the arch; three years later the eternal flame was lit. 