Input (grade 8): Henry VI (6 December 1421 21 May 1471) was King of England 1422 - 1461 and again from 1470 to 1471, and King of France from 1422 to 1453.
Output (grade 7): Henry VI (December 6, 1421 - May 21, 1471) was King of England from 1422 to 1461 and then from 1470 to 1471.