SUN VALLEY, ID - JULY 11: Billionaire Bill Gates, chairman and founder of Microsoft Corp., and his wife Melinda attend the Allen & Company Sun Valley Conference on July 11, 2015 in Sun Valley, Idaho. Many of the worlds wealthiest and most powerful business people from media, finance, and technology attend the annual week-long conference which is in its 33rd year. (Photo by Scott Olson/Getty Images)
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