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NEW YORK, NY - JUNE 03: Bill Gates attends the Forbes' 2015 Philanthropy Summit Awards Dinner on June 3, 2015 in New York City. (Photo by Monica Schipper/WireImage)

NEW YORK, NY - JUNE 03: Bill Gates attends the Forbes' 2015 Philanthropy Summit Awards Dinner on June 3, 2015 in New York City.  (Photo by Monica Schipper/WireImage)