Warren Buffett, Berkshire Hathaway Inc. chairman and chief executive officer, right, talks with Bill Gates, billionaire and co-chair of the Bill and Melinda Gates Foundation, as they tour the exhibition floor during the Berkshire Hathaway Inc. annual shareholders meeting in Omaha, Nebraska, U.S., on Saturday, May 2, 2015. More than 40,000 people are expected Saturday at the Berkshire Hathaway annual meeting, which marks Warren Buffett's 50th year running the company. Photographer: Daniel Acker/Bloomberg via Getty Images
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