Input (grade 13): Jelena KaraÄ 'orÄ' eviÄ or Princess Helen of Serbia (4 November 1884 â "16 October 1962) was the daughter of King Peter I of Yugoslavia and his wife Princess Zorka of Montenegro.
Output (grade 12): Princess Helen of Serbia (4 November 1884 - 16 October 1962) was the daughter of King Peter I of Yugoslavia and his wife Princess Zorka of Montenegro.