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Bill Gates, center, founder of the software company Microsoft, attends a joint press conference with German Development Aid Minster Dirk Niebel, left, and the CEO of Bayer CropScience, Liam Condon, right, after a meeting in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)

Associated Press
Bill Gates, center, founder of the software company Microsoft, attends a joint press conference with German Development Aid Minster Dirk Niebel, left, and the CEO of Bayer CropScience, Liam Condon, right, after a meeting in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)
Bill Gates, center, founder of the software company Microsoft, attends a joint press conference with German Development Aid Minster Dirk Niebel, left, and the CEO of Bayer CropScience, Liam Condon, right, after a meeting in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)
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