LONDON, ENGLAND - JUNE 17: In this handout photo provided by issued by Buckingham Palace, Queen Elizabeth II and Prince Philip, Duke of Edinburgh observe a minute's silence for the Grenfell Tower fire disaster in the quadrangle of Buckingham Palace, on June 17, 2017 in London, England. The annual ceremony is Queen Elizabeth II's birthday parade and dates back to the 17th Century when the Colours of a regiment were used as a rallying point in battle. (Photo by Hugo Burnand/Buckingham Palace via Getty Images)
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