Question: Leo McKern was in what epic romantic drama film directed by David Lean?

full_context: Document 1: Michael Hordern: Sir Michael Murray Hordern, CBE (3 October 19112 May 1995) was an English stage and film actor whose career spanned nearly 60 years. He is best known for his Shakespearean roles, especially that of King Lear, which he played to much acclaim on stage in Stratford-upon-Avon in 1969 and London in 1970. He then successfully assumed the role on television five years later. He often appeared in film, rising from a bit part actor in the late 1930s to a member of the main cast; by the time of his death he had appeared in nearly 140 cinema roles. His later work was predominantly in television and radio.
Document 2: The Omen: The Omen is a 1976 British-American supernatural horror film directed by Richard Donner, and written by David Seltzer. The film stars Gregory Peck, Lee Remick, David Warner, Harvey Spencer Stephens, Billie Whitelaw, Patrick Troughton, Martin Benson, and Leo McKern. The first installment of "The Omen" franchise, "The Omen" concerns a young child replaced at birth by American Ambassador Robert Thorn unbeknownst to his wife, after their own son is stillborn. They are surrounded by mysterious and ominous deaths, unaware that the child, Damien, is the Antichrist.
Document 3: Basil Rathbone: Philip St. John Basil Rathbone MC (13 June 1892 – 21 July 1967) was a South African-born English actor. He rose to prominence in the United Kingdom as a Shakespearean stage actor and went on to appear in more than 70 films, primarily costume dramas, swashbucklers and, occasionally, horror films.
Document 4: Ryan's Daughter: Ryan's Daughter is a 1970 epic romantic drama film directed by David Lean. The film, set in August 1917 - January 1918, tells the story of a married Irish woman who has an affair with a British officer during World War I, despite moral and political opposition from her nationalist neighbours; starring Robert Mitchum, Sarah Miles, John Mills, Christopher Jones, Trevor Howard and Leo McKern. The film is a re-telling of the plot of Gustave Flaubert's novel "Madame Bovary".
Document 5: Brief Encounter: Brief Encounter is a 1945 British romantic drama film directed by David Lean about British suburban life on the eve of World War 2, centering on Laura, a married woman with children, whose conventional life becomes increasingly complicated because of a chance meeting at a railway station with a stranger, Alec. They fall in love, bringing about unexpected consequences.
Document 6: The Go-Between (1971 film): The Go-Between is a 1971 British romantic drama film, directed by Joseph Losey. Its screenplay, by Harold Pinter, is an adaptation of the 1953 novel "The Go-Between" by L. P. Hartley. The film stars Julie Christie, Alan Bates, Margaret Leighton, Michael Redgrave and Dominic Guard. It won the Palme d'Or at the 1971 Cannes Film Festival.
Document 7: Gone with the Wind (film): Gone with the Wind is a 1939 American epic historical romance film adapted from Margaret Mitchell's 1936 novel of the same name. The film was produced by David O. Selznick of Selznick International Pictures and directed by Victor Fleming. Set in the American South against the backdrop of the American Civil War and Reconstruction era, the film tells the story of Scarlett O'Hara, the strong-willed daughter of a Georgia plantation owner, from her romantic pursuit of Ashley Wilkes, who is married to his cousin, Melanie Hamilton, to her marriage to Rhett Butler. The leading roles are portrayed by Vivien Leigh (Scarlett), Clark Gable (Rhett), Leslie Howard (Ashley), and Olivia de Havilland (Melanie).
Document 8: John Mills: Sir John Mills, CBE (born Lewis Ernest Watts Mills, 22 February 190823 April 2005) was an English actor who appeared in more than 120 films in a career spanning seven decades. On screen, he often played people who are not at all exceptional, but become heroes because of their common sense, generosity and good judgment. He received an Academy Award for Best Supporting Actor for his work in "Ryan's Daughter" (1970).
Document 9: Leo McKern: Reginald "Leo" McKern, AO (16 March 1920 – 23 July 2002) was an Australian actor who appeared in numerous British, Australian and American television programmes and films, and in more than 200 stage roles. Notable roles he portrayed include Clang in "Help!" (1965), Thomas Cromwell in "A Man for All Seasons" (1966), Tom Ryan in "Ryan's Daughter" (1970), Paddy Button in "The Blue Lagoon" (1980), Dr. Grogan in "The French Lieutenant's Woman" (1981), Father Imperius in "Ladyhawke" (1985) and, in the role that made him a household name as an actor, Horace Rumpole, whom he played in "Rumpole of the Bailey". He also portrayed Carl Bugenhagen in the first and of "The Omen" series.
Document 10: An Affair to Remember: An Affair to Remember is a 1957 American romance film starring Cary Grant and Deborah Kerr, directed by Leo McCarey and filmed in CinemaScope and DeLuxe Color. It was distributed by 20th Century Fox. The film is considered one of the most romantic movies of all time, according to the American Film Institute. The film was a remake of McCarey's 1939 film "Love Affair", starring Irene Dunne and Charles Boyer.
Document 11: Doctor Zhivago (film): Doctor Zhivago (Italian: "Il dottor Zivago") is a 1965 British-Italian epic romantic drama film directed by David Lean. It is set in Russia between the years prior to World War I and the Russian Civil War of 1917–1922, and is based on the Boris Pasternak novel of the same name. While immensely popular in the West, the book was banned in the Soviet Union for decades. For this reason, the film could not be made in the Soviet Union and was instead filmed mostly in Spain.
Document 12: Oliver Reed: Robert Oliver Reed (13 February 1938 – 2 May 1999) was an English actor known for his upper-middle class, macho image, hellraiser lifestyle, and "tough guy" roles. Notable films include "The Trap" (1966), "Oliver!" (1968), "Women in Love" (1969), "Hannibal Brooks" (1969), "The Devils" (1971), "The Three Musketeers" (1973), "Tommy" (1975), "Lion of the Desert" (1981), "Castaway" (1986), "The Adventures of Baron Munchausen" (1988) and "Funny Bones" (1995). For "Gladiator" (2000), his final film, Reed was posthumously nominated for the BAFTA Award for Best Actor in a Supporting Role.
Document 13: Ian McKellen, roles and awards: Ian McKellen (born 25 May 1939) is an English stage and screen actor. He is the recipient of six Laurence Olivier Awards, a Tony Award, a Golden Globe Award, two Academy Award nominations, four BAFTA nominations and five Emmy Award nominations. McKellen's work spans genres ranging from Shakespearean and modern theatre to popular fantasy and science fiction. His notable film roles include Gandalf in "The Lord of the Rings" and "The Hobbit" trilogies, Magneto in the "X-Men" films, Sir Leigh Teabing in "The Da Vinci Code" (2006), Sherlock Holmes in "Mr. Holmes" (2015) and Cogsworth in "Beauty and the Beast" (2017).
Document 14: Madeleine (1950 film): Madeleine is a 1950 film directed by David Lean, based on a true story about Madeleine Smith, a young Glasgow woman from a wealthy family who was tried in 1857 for the murder of her lover, Emile L'Angelier. The trial was much publicized in the newspapers of the day and labeled "the trial of the century". Lean's adaptation of the story stars his then-wife, Ann Todd, with Ivan Desny as her French lover. Norman Wooland played the respectable suitor and Leslie Banks the authoritarian father—both of whom are unaware of Madeleine's secret life.
Document 15: Matt McKenzie: Matt McKenzie is an actor best known for his voicework in games and movies. He is the voice of Auron in the RPG games "Final Fantasy X", "Final Fantasy X-2", and "Kingdom Hearts II". He also provided the English voice of Borgoff in the movie "", Ptolemy in "", and Major Elliot in the animated movie "". McKenzie has also guest starred in some well-known movies ("Gods and Monsters" with Sir Ian McKellen, in which he portrayed Colin Clive) and TV shows such as "", "", "JAG", "7th Heaven", "That '70s Show", "The O.C." and recently 24 as Agent Hollister. He also had a cameo role in Clint Eastwood's "The Rookie" as Inspector Wang. He appeared in an episode of "House M.D." as Doctor Fedler, where he talks briefly with Robert Chase about the Beatles. Most recently he appeared on two episodes of AMC's "Mad Men" as Crab Colson. As well as the voice of various Agents in the Animatrix.
ground_truth: Ryan's Daughter