Question: What was the 1971 television film directed by Steven Spielburg in which the winner of an Emmy Award for Best Supporting Actor (Continuing Character) in a Dramatic Series appeared? 

full_context: Document 1: Don Siegel: Donald Siegel ( ; October 26, 1912 – April 20, 1991) was an American film director and producer. His name variously appeared in the credits of his films as both Don Siegel and Donald Siegel. He is best known for the original sci-fi film "Invasion of the Body Snatchers" (1956), as well as five films with Clint Eastwood, including the police thriller "Dirty Harry" (1971) and the prison drama "Escape from Alcatraz" (1979), and John Wayne's final film the 1976 Western "The Shootist".
Document 2: Warren Oates: Warren Mercer Oates (July 5, 1928 – April 3, 1982) was an American actor best known for his performances in several films directed by Sam Peckinpah, including "The Wild Bunch" (1969) and "Bring Me the Head of Alfredo Garcia" (1974). He starred in numerous films during the early 1970s that have since achieved cult status, such as "The Hired Hand" (1971), "Two-Lane Blacktop" (1971), and "Race with the Devil" (1975). Oates also portrayed John Dillinger in the biopic "Dillinger" (1973) and as the supporting character U.S. Army Sergeant Hulka in the military comedy "Stripes" (1981), starring Bill Murray.
Document 3: Young Maverick: Young Maverick is a 1979 television series. The series was a sequel of the 1957 series "Maverick", which had starred James Garner as roving gambler Bret Maverick. Charles Frank played Ben Maverick, the son of Bret's first cousin Beau Maverick, making him Bret's first cousin once removed. Frank's real-life wife Susan Blanchard played his girlfriend Nell, while John Dehner (who appeared in "Maverick"'s "Shady Deal At Sunny Acres") appeared as a frontier marshal who had arrested Ben's father Beau decades before. The series was cancelled by CBS after six hour-long episodes had been shown, leaving two which were never aired on the network. All eight episodes were screened later that year on BBC1 in the UK.
Document 4: Ken Curtis: Ken Curtis (July 2, 1916 – April 28, 1991) was an American singer and actor best known for his role as Festus Haggen on the long-running CBS western television series "Gunsmoke". Although he appeared on "Gunsmoke" in other earlier roles, he was first cast in his iconic role in season 8 episode 13, "Us Haggens". His next appearance was with his mule, Ruth, in "Prairie Wolfer" in season 9 episode 16, which also featured Noah Beery Jr., as a villain.
Document 5: Matt Dillon (Gunsmoke): Matt Dillon is a fictional character featured on both the radio and television versions of "Gunsmoke". He serves as the U.S. Marshal of Dodge City, Kansas, who works to preserve law and order in the western frontier of the 1870s. The character was created by writer John Meston, who envisioned him as a man "...whose hair is probably red, if he's got any left. He'd be handsomer than he is if he had better manners but life and his enemies have left him looking a little beat up, and I suppose having seen his mother (back about 1840) trying to take a bath in a wooden washtub without fully undressing left his soul a little warped. Anyway, there'd have to be something wrong with him or he wouldn't have hired on as a United States Marshal in the heyday of Dodge City, Kansas." Notwithstanding Meston's original vision, the character evolved considerably during "Gunsmoke"' s nine-year run on CBS Radio and its 20-year run on CBS Television.
Document 6: Law of the Plainsman: Law of the Plainsman is a Western television series starring Michael Ansara that aired on the NBC television network from October 1, 1959, until May 5, 1960. The character of Native American U.S. Marshal Sam Buckhart was introduced in two episodes ("The Indian" and "The Raid") of the popular ABC Western television series "The Rifleman" starring Chuck Connors as Lucas McCain.
Document 7: Duel at Diablo: Duel at Diablo is a 1966 western film starring James Garner in his first Western since leaving "Maverick" and Sidney Poitier in his first Western. Based on Marvin H. Albert's 1957 novel "Apache Rising", the film was written by Albert and Michael M. Grilikhes and directed by Ralph Nelson who had directed Poitier in "Lilies of the Field". The supporting cast includes Bibi Andersson, Bill Travers, Dennis Weaver and John Hoyt; Ralph Nelson has a cameo as an Army Major. The movie was shot on location amidst striking scenery in Utah; the musical score was composed by Neal Hefti.
Document 8: Dennis Weaver: William Dennis Weaver (June 4, 1924 – February 24, 2006) was an American actor who was best known for his work in television and films. Weaver's two most notable roles were as Marshal Matt Dillon's trusty helper Chester Goode on the CBS western "Gunsmoke" and as Deputy Marshal Sam McCloud on the NBC police drama "McCloud". He appeared in the 1971 television film "Duel", the first film of director Steven Spielberg. He is also remembered for his role as the twitchy motel attendant in Orson Welles's film "Touch of Evil" (1958).
Document 9: Lawman (TV series): Lawman is an American western television series originally telecast on ABC from 1958 to 1962 starring John Russell as Marshal Dan Troop and Peter Brown as Deputy Marshal Johnny McKay. The series was set in Laramie, Wyoming during 1879 and the 1880s. Warner Bros. already had several western series on the air at the time, having launched "Cheyenne" with Clint Walker as early as 1955. The studio continued the trend in 1957 with the additions of "Maverick" with James Garner and Jack Kelly, "Colt .45" with Wayde Preston, and "Sugarfoot" with Will Hutchins. One year later, Warner Bros. added "Lawman" and "Bronco" with Ty Hardin.
Document 10: Bronco (TV series): Bronco is a Western series on ABC from 1958 through 1962. It was shown by the BBC in the United Kingdom. The program starred Ty Hardin as Bronco Layne, a former Confederate officer who wandered the Old West, meeting such well-known individuals as Wild Bill Hickok, Billy the Kid, Jesse James, Theodore Roosevelt, Belle Starr, Cole Younger, and John Wesley Hardin (the last played by Scott Marlowe).
Document 11: Joe Don Baker: Joe Don Baker (born February 12, 1936) is an American character actor and a life member of the Actors Studio, He established himself as an action star with supporting roles as a mysterious cowboy drifter in "Guns of the Magnificent Seven" (1969), and as a deputy sheriff in the western "Wild Rovers" (1971), before receiving worldwide fame for his iconic roles as a mafia hitman in "Charley Varrick" (1973), real-life Tennessee Sheriff Buford Pusser in the classic action film "Walking Tall" (1973), brute force detective Mitchell in "Mitchell" (1975), deputy sheriff Thomas Jefferson Geronimo III in "Final Justice" (1985), and as chief Jerry Karlin in the action-comedy "Fletch" (1985).
Document 12: Strother Martin: Strother Douglas Martin, Jr. (March 26, 1919 – August 1, 1980) was an American character actor who often appeared in support of superstars John Wayne and Paul Newman and was memorable in western films directed by John Ford and Sam Peckinpah. Martin perhaps is best known as the prison "captain" in the 1967 film "Cool Hand Luke", in which he uttered the famous line, "What we've got here is failure to communicate." The line is number 11 on the American Film Institute list of AFI's 100 Years...100 Movie Quotes.
Document 13: Mark McCain: Mark McCain is the son of rancher Lucas McCain in the ABC Western television series "The Rifleman," which ran from 1958 to 1963. Singer/actor and former Mousketeer Johnny Crawford was cast in the role, and was nominated for an Emmy Award in 1959 as Best Supporting Actor (Continuing Character) in a Dramatic Series. The award went to Dennis Weaver, then portraying Chester Goode on CBS's "Gunsmoke".
Document 14: Buck Taylor: Walter Clarence Taylor, III, known as Buck Taylor (born May 13, 1938), is an American actor best known for his role as gunsmith-turned-deputy Newly O'Brien in 174 episodes during the last eight seasons of CBS's "Gunsmoke" television series (1967–1975). In recent years, he has painted the portrait of his friend and "Gunsmoke" series' star James Arness. Taylor's painting specialty is the American West, and each year, he creates the posters for several Texas rodeos. Taylor lives with his second wife on a ranch near Fort Worth, Texas.
Document 15: Chuck Connors: Kevin Joseph Aloysius “Chuck” Connors (April 10, 1921 – November 10, 1992) was an American actor, writer and professional basketball and baseball player. He is one of only 12 athletes in the history of American professional sports to have played both Major League Baseball and in the National Basketball Association. With a 40-year film and television career, he is best known for his five-year role as Lucas McCain in the highly rated ABC series "The Rifleman" (1958–63).
ground_truth: "Duel"