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Japan's Prince Hitachi is awarded the Grand Prize of the Charter of Paris against cancer by UNESCO exedcutive director Irina Bokova applaudon February 1, 2016, in Versailles, near Paris. / AFP / THOMAS SAMSON (Photo credit should read THOMAS SAMSON/AFP/Getty Images)

Japan's Prince Hitachi is awarded the Grand Prize of the Charter of Paris against cancer by UNESCO exedcutive director Irina Bokova applaudon February 1, 2016, in Versailles, near Paris.   / AFP / THOMAS SAMSON        (Photo credit should read THOMAS SAMSON/AFP/Getty Images)