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CANTERBURY, ENGLAND - MARCH 26: Prince Philip, Duke of Edinburgh and Queen Elizabeth II with The Very Reverend Robert Willis Dean of Canterbury as they visit Canterbury Cathedral to unveil a statue of Queen Elizabeth II and one of Prince Philip, Duke of Edinburgh on March 26, 2015 in Canterbury, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

CANTERBURY, ENGLAND - MARCH 26:  Prince Philip, Duke of Edinburgh and Queen Elizabeth II with The Very Reverend Robert Willis Dean of Canterbury as they visit Canterbury Cathedral to unveil a statue of Queen Elizabeth II and one of Prince Philip, Duke of Edinburgh on March 26, 2015 in Canterbury, England.  (Photo by Mark Cuthbert/UK Press via Getty Images)