ISTANBUL, TURKEY - DECEMBER 15 : Whirling dervishes perform during the "Seb-i Arus" (The Night of union) ceremony at Galata lodge used by mevlevi dervishes to mark the 743rd anniversary of the death of Mevlana Jalaluddin al-Rumi in Istanbul, Turkey on December 15, 2016. (Photo by Berk Ozkan/Anadolu Agency/Getty Images)
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