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COLOGNE, GERMANY - MARCH 31: Heinrich Popow and Kathrin Menzinger perform on stage during the 3rd show of the tenth season of the television competition 'Let's Dance' on March 31, 2017 in Cologne, Germany. (Photo by Andreas Rentz/Getty Images)

COLOGNE, GERMANY - MARCH 31:  Heinrich Popow and Kathrin Menzinger perform on stage during the 3rd show of the tenth season of the television competition 'Let's Dance' on March 31, 2017 in Cologne, Germany.  (Photo by Andreas Rentz/Getty Images)