context: -LRB- CNN -RRB- -- Kitty Kelley , biographer of the rich and famous , is getting ready to release an unauthorized biography on talk show queen Oprah Winfrey . The 544-page book , `` Oprah : A Biography , '' will be released on April 13 , with a first printing of 500,000 copies , according to the Crown Publishing Group . `` We are excited to be publishing the first comprehensive biography of one of the most influential , powerful and admired public figures of our time , by the most widely read biographer of our era , '' said Tina Constable , a vice president with Crown . The author spent three years researching for the book and conducted 850 interviews , Crown said . Kelley 's previous books have chronicled the Bush family political dynasty , the British royal family , Frank Sinatra , Elizabeth Taylor , Jacqueline Kennedy Onassis and Nancy Reagan . Winfrey 's Harpo Productions had little to say about the book . `` Oprah has n't participated in or read Kitty Kelley 's book , so she is unable to comment , '' said Winfrey spokeswoman Lisa Halliday .
question: its authorized or not ?
answers: unauthorized
content_span_normalized_text: kitty kelley , biographer of the rich and famous , is getting ready to release an unauthorized biography on talk show queen oprah winfrey .
question_normalized_text: its authorized or not ?
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