Question: Edmond O'Brien appeared in what epic Metro-Goldwyn-Mayer film adaptation of the play by Shakespeare?
Context: Edmond O'Brien (September 10, 1915 – May 9, 1985) was an American actor who appeared in more than 100 films from the 1940s to the 1970s, often playing character parts.  He received the Academy Award for Best Supporting Actor and the corresponding Golden Globe for his supporting role in "The Barefoot Contessa" (1954), as well as a second Golden Globe and another Academy Award nomination for "Seven Days in May" (1964).  His other notable films include "The Hunchback of Notre Dame" (1939), "The Killers" (1946), "White Heat" (1949), "D.O.A." (1950), "Julius Caesar" (1953), "1984" (1956), "The Girl Can't Help It" (1956), "The Man Who Shot Liberty Valance" (1961), and "The Wild Bunch" (1969). Comet is an American digital broadcast television network that is owned by the Sinclair Television Group subsidiary of the Sinclair Broadcast Group and operated by the MGM Television division of Metro-Goldwyn-Mayer.  The network focuses on science fiction with some supernatural, horror, adventure and fantasy series and films, sourced mainly from the Metro-Goldwyn-Mayer film and television library. Donal "Donald" O'Brien (15 September 1930 - 29 November 2003) was a French-born Irish film and television actor.  In his near 40-year career, O'Brien appeared in dozens of stage performances and in more than 60 film and television productions. Kiss Me Kate is a 1953 Metro-Goldwyn-Mayer film adaptation of the Broadway musical of the same name. "Tracy Does Conan" is the seventh episode of NBC's first season of "30 Rock".  It was written by the series' creator and executive producer, Tina Fey and it was directed by one of the season's supervising producers, Adam Bernstein.  It first aired on December 7, 2006 in the United States and November 29, 2007 in the United Kingdom.  Guest stars in the episode included Katrina Bowden, Kevin Brown, Grizz Chapman, Rachel Dratch, Dave Finkel, Steve Hollander, Johnnie May, Maulik Pancholy, Chris Parnell, Aubrey Plaza, Keith Powell, R. N. Rao and Dean Winters.  Conan O'Brien appeared as himself in this episode.  The episode marks the first appearance of Chris Parnell as recurring character, Dr. Leo Spaceman. Anna Karenina is a 1935 Metro-Goldwyn-Mayer film adaptation of the novel "Anna Karenina" by Leo Tolstoy and directed by Clarence Brown.  The film stars Greta Garbo, Fredric March, Basil Rathbone and Maureen O'Sullivan.  There are several other film adaptations of the novel. 1984 is a 1956 British black-and-white science fiction drama film, freely based on the novel "Nineteen Eighty-Four" by George Orwell, depicting a totalitarian future society.  This is the first cinema rendition of the story, directed by Michael Anderson and starring Edmond O'Brien as protagonist Winston Smith, and featuring Donald Pleasence, Jan Sterling, and Michael Redgrave.  The character O'Brien, the antagonist, was renamed "O'Connor", due to the shared surname of the actor Edmond O'Brien. The Adventures of Huckleberry Finn is a 1939 [Metro-Goldwyn-Mayer film adaptation of Mark Twain's novel of the same name, starring Mickey Rooney in the title role.  The supporting cast features Walter Connolly, William Frawley and Rex Ingram.  It was remade by MGM in 1960.  A musical version was released in 1974. Hamlet is a 1948 British film adaptation of William Shakespeare's play "Hamlet", adapted and directed by and starring Sir Laurence Olivier.  "Hamlet" was Olivier's second film as director, and also the second of the three Shakespeare films that he directed (the 1936 "As You Like It" had starred Olivier, but had been directed by Paul Czinner).  "Hamlet" was the first British film to win the Academy Award for Best Picture.  It is also the first sound film of the play in English.  A 1935 sound film adaptation, "Khoon Ka Khoon", had been made in India and filmed in the Urdu language. Julius Caesar is a 1953 epic Metro-Goldwyn-Mayer film adaptation of the play by Shakespeare, directed by Joseph L. Mankiewicz, who also wrote the uncredited screenplay, and produced by John Houseman.  The original music score is by Miklós Rózsa.  The film stars Marlon Brando as Mark Antony, James Mason as Brutus, John Gielgud as Cassius, Louis Calhern as Julius Caesar, Edmond O'Brien as Casca, Greer Garson as Calpurnia, and Deborah Kerr as Portia.
Answer: Julius Caesar