Bill Gates, founder of the software company Microsoft, speaks during a press conference after a meeting with German Development Aid Minster Dirk Niebel, unseen, in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)

Associated Press
Bill Gates, founder of the software company Microsoft, speaks during a press conference after a meeting with German Development Aid Minster Dirk Niebel, unseen, in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)
Bill Gates, founder of the software company Microsoft, speaks during a press conference after a meeting with German Development Aid Minster Dirk Niebel, unseen, in Berlin, Germany, Tuesday, Jan. 29, 2013. (AP Photo/Michael Sohn)
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