File photo of former Democratic presidential nominee and U.S. Vice President Gore with Oprah Winfrey on her television show in Chicago
Former Democratic presidential nominee and U.S. Vice President Al Gore appears with Oprah Winfrey on her television show while campaigning in Chicago, Illinois, in this September 11, 2000 file photo. Winfrey will end her TV chat show at the end of its 25th season in September 2011, her production company Harpo Inc said on November 19, 2009. REUTERS/Larry Downing/Files (UNITED STATES POLITICS ENTERTAINMENT)
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