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BERLIN, GERMANY - JUNE 23: Queen Elizabeth II stands next to her plane upon her arrival with Prince Philip, the Duke of Edinburgh, at Tegel airport on the first of their four-day visit to Germany on June 23, 2015 in Berlin, Germany. The Queen and Prince Philip are scheduled to visit Berlin, Frankfurt and the concentration camp memorial at Bergen-Belsen during their trip, which is their first since 2004. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JUNE 23:  Queen Elizabeth II stands next to her plane upon her arrival with Prince Philip, the Duke of Edinburgh, at Tegel airport on the first of their four-day visit to Germany on June 23, 2015 in Berlin, Germany. The Queen and Prince Philip are scheduled to visit Berlin, Frankfurt and the concentration camp memorial at Bergen-Belsen during their trip, which is their first since 2004.  (Photo by Sean Gallup/Getty Images)