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Sony Corp has appointed for the first time a president for its profitable U.S.-based entertainment business, the latest in a series of management changes at the Japanese consumer electronics giant which is trying to bolster its finances. Sony said on Friday it had appointed Nicole Seligman, the current head of its U.S. operations, to the newly created role which reports to Sony Entertainment Chief Executive Michael Lynton. She will remain as executive vice president of Sony Corp and will continue to advise on legal issues. Seligmans appointment follows a shake-up at Sonys Tokyo headquarters which included the appointment of Kenichiro Yoshida as chief strategic and financial officer, and who has been lauded by investors for spearheading a restructuring drive.