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MUNICH, GERMANY - SEPTEMBER 20: Revellers enjoy drinking beer at Hofbraeuhaus beer tent during the opening day of the 2014 Oktoberfest on September 20, 2014 in Munich, Germany. The 181st Oktoberfest will be open to the public from September 20 through October 5 and traditionally draws millions of visitors from across the globe to the the world's largest beer festival. (Photo by Johannes Simon/Getty Images)

MUNICH, GERMANY - SEPTEMBER 20:  Revellers enjoy drinking beer at Hofbraeuhaus beer tent during the opening day of the 2014 Oktoberfest on September 20, 2014 in Munich, Germany. The 181st Oktoberfest will be open to the public from September 20 through October 5 and traditionally draws millions of visitors from across the globe to the the world's largest beer festival.  (Photo by Johannes Simon/Getty Images)