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William Goldman, screenwriter of Butch Cassidy and the Sundance Kid and All the President's Men, has died aged 87.

Goldman, who received Oscars for both of those films, also wrote Marathon Man, Magic and The Princess Bride, which he adapted from his own novels.

His memoir Adventures in the Screen Trade is famous for his memorable declaration that "nobody knows anything" about the movie business.

He was also a noted "script doctor" who worked uncredited on many features.

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