Britain's Queen Elizabeth II (L), Britain's Prince Charles, Prince of Wales (C) and Britain's Prince Philip, Duke of Edinburgh leave after attending a Commonwealth Day Service at Westminster Abbey in central London, on March 13, 2017. Queen Elizabeth II has been Head of the Commonwealth throughout her reign. Organised by the Royal Commonwealth Society, the Service is the largest annual inter-faith gathering in the United Kingdom. / AFP PHOTO / POOL AND AFP PHOTO / Ben STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)
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