Please answer the following question: Information:  - Stalag 17 is a 1953 war film which tells the story of a group of American airmen held in a German World War II prisoner of war camp, who come to suspect that one of their number is an informant. It was adapted from a Broadway play.  - How Green Was My Valley is a 1939 novel by Richard Llewellyn, narrated by Huw Morgan, the main character, about his Welsh family and the mining community in which they live. The author had claimed that he based the book on his own personal experiences but this was found to be untrue after his death; Llewellyn was English-born and spent little time in Wales, though he was of Welsh descent. Llewellyn gathered material for the novel from conversations with local mining families in Gilfach Goch.  - The American Civil War was a civil war in the United States fought from 1861 to 1865. The Union faced secessionists in eleven Southern states grouped together as the Confederate States of America. The Union won the war, which remains the bloodiest in U.S. history.  - Tennis is a racket sport that can be played individually against a single opponent (singles) or between two teams of two players each (doubles). Each player uses a tennis racket that is strung with cord to strike a hollow rubber ball covered with felt over or around a net and into the opponent's court. The object of the game is to play the ball in such a way that the opponent is not able to play a valid return. The player who is unable to return the ball will not gain a point, while the opposite player will.  - The City of New York, often called New York City or simply New York, is the most populous city in the United States. With an estimated 2015 population of 8,550,405 distributed over a land area of just , New York City is also the most densely populated major city in the United States. Located at the southern tip of the state of New York, the city is the center of the New York metropolitan area, one of the most populous urban agglomerations in the world. A global power city, New York City exerts a significant impact upon commerce, finance, media, art, fashion, research, technology, education, and entertainment, its fast pace defining the term "New York minute". Home to the headquarters of the United Nations, New York is an important center for international diplomacy and has been described as the cultural and financial capital of the world.  - John Lee Mahin (August 23, 1902, Evanston, Illinois  April 18, 1984, Los Angeles) was an American screenwriter and producer of films who was active in Hollywood.   - The Horse Soldiers is a 1959 drama film set in Mississippi during the American Civil War . Loosely based on Harold Sinclair 's 1956 novel by the same name , it was directed by John Ford and starred John Wayne , William Holden and Constance Towers . Althea Gibson , US tennis champion , had a minor role and insisted that her dialogue be rewritten , as she found its dialect demeaning . John Lee Mahin and Martin Rackin produced the movie and wrote its screenplay .  - The Academy Awards, or "Oscars", is an annual American awards ceremony hosted by the Academy of Motion Picture Arts and Sciences (AMPAS) to recognize excellence in cinematic achievements in the United States film industry as assessed by the Academy's voting membership. The various category winners are awarded a copy of a statuette, officially called the Academy Award of Merit, which has become commonly known by its nickname "Oscar." The awards, first presented in 1929 at the Hollywood Roosevelt Hotel, are overseen by AMPAS.  - The Grapes of Wrath is an American realist novel written by John Steinbeck and published in 1939. The book won the National Book Award and Pulitzer Prize for fiction, and it was cited prominently when Steinbeck was awarded the Nobel Prize in 1962.  - The Pacific Northwest (in the United States, commonly abbreviated as PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and loosely, by the Rocky Mountains on the east. Though no agreed boundary exists, a common conception includes the U.S. states of Oregon and Washington and the Canadian province of British Columbia. Broader conceptions reach north into Alaska and Yukon, south into far northern California and east to the Continental Divide, thus including Idaho, Western Montana, and western Wyoming. Narrower conceptions may be limited to the northwestern US or to the coastal areas west of the Cascade and Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, geography, society, and other factors.  - A civil war, also known as an intrastate war in polemology, is a war between organized groups within the same state or country, or, less commonly, between two countries created from a formerly united state. The aim of one side may be to take control of the country or a region, to achieve independence for a region or to change government policies. The term is a calque of the Latin "bellum civile" which was used to refer to the various civil wars of the Roman Republic in the 1st century BC.  - A film director is a person who directs the making of a film. Generally, a film director controls a film's artistic and dramatic aspects, and visualizes the script while guiding the technical crew and actors in the fulfillment of that vision. The director has a key role in choosing the cast members, production design, and the creative aspects of filmmaking. Under European Union law, the director is viewed as the author of the film.  - The Confederate States, officially the Confederate States of America (CSA or C.S.), commonly referred to as the Confederacy, was an unrecognized breakaway country of 11 secessionist slave states existing from 1861 to 1865. It was originally formed by seven slave states  South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas  in the Lower South region of the United States whose regional economy was mostly dependent upon agriculture, particularly cotton, and a plantation system that relied upon the labor of African-American slaves.  - Montana is a state in the Western region of the United States. The state's name is derived from the Spanish word (mountain). Montana has several nicknames, although none official, including "Big Sky Country" and "The Treasure State", and slogans that include "Land of the Shining Mountains" and more recently "The Last Best Place". Montana has a border with three Canadian provinces: British Columbia, Alberta, and Saskatchewan, the only state to do so. It also borders North Dakota and South Dakota to the east, Wyoming to the south, and Idaho to the west and southwest. Montana is ranked 4th in size, but 44th in population and 48th in population density of the 50 United States. The western third of Montana contains numerous mountain ranges. Smaller island ranges are found throughout the state. In total, 77 named ranges are part of the Rocky Mountains. The eastern half of Montana is characterized by western prairie terrain and badlands.  - The Man Who Shot Liberty Valance is a 1962 American Western film directed by John Ford starring James Stewart and John Wayne. The black-and-white film was released by Paramount Pictures. The screenplay by James Warner Bellah and Willis Goldbeck was adapted from a short story written by Dorothy M. Johnson. The supporting cast features Vera Miles, Lee Marvin, Edmond O'Brien, Andy Devine, John Carradine, Woody Strode, Strother Martin, and Lee Van Cleef.  - In golf the distinction between amateurs and professionals is rigorously maintained. An amateur who breaches the rules of amateur status may lose his or her amateur status. A golfer who has lost his or her amateur status may not play in amateur competitions until amateur status has been reinstated; a professional may not play in amateur tournaments unless the Committee is notified, acknowledges and confirms the participation. It is very difficult for a professional to regain his or her amateur status; simply agreeing not to take payment for a particular tournament is not enough. A player must apply to the governing body of the sport to have amateur status reinstated.  - The International Tennis Hall of Fame is located in Newport, Rhode Island, United States. It honors players and contributors to the sport of tennis and includes a museum, grass tennis courts, an indoor tennis facility, and a court tennis (or real tennis) facility.  - Constance Mary Towers (born May 20, 1933) is an American actress and singer. A native of Montana, she began her career doing radio plays as a child in the Pacific Northwest before relocating to New York City where she professionally studied at the Juilliard School of Music.  - William Holden (born William Franklin Beedle, Jr.; April 17, 1918  November 12, 1981) was an American actor who was one of the biggest box office draws of the 1950s through the 1970s. He won the Academy Award for Best Actor in 1953 for his role in "Stalag 17", and a Primetime Emmy Award for Outstanding Lead Actor for his role in the 1973 television film "The Blue Knight".  - Hollywood (, informally Tinseltown ) is an ethnically diverse, densely populated, relatively low-income neighborhood in the central region of Los Angeles, California. It is notable as the home of the U.S. film industry, including several of its historic studios, and its name has come to be a shorthand reference for the industry and the people in it.  - Secession (derived from the Latin term "secessio") is the withdrawal of a group from a larger entity, especially a political entity (a country), but also any organization, union or military alliance. Threats of secession can also be a strategy for achieving more limited goals.  - A screenplay writer, screenwriter for short, scriptwriter or scenarist is a writer who practices the craft of screenwriting, writing screenplays on which mass media such as films, television programs, comics or video games are based.  - Los Angeles (Spanish for "The Angels"), officially the City of Los Angeles and often known by its initials L.A., is the second-most populous city in the United States (after New York City), the most populous city in California and the county seat of Los Angeles County. Situated in Southern California, Los Angeles is known for its mediterranean climate, ethnic diversity, sprawling metropolis, and as a major center of the American entertainment industry. Los Angeles lies in a large coastal basin surrounded on three sides by mountains reaching up to and over .  - John Ford (February 1, 1894  August 31, 1973) was an American film director. He is renowned both for Westerns such as "Stagecoach" (1939), "The Searchers" (1956), and "The Man Who Shot Liberty Valance" (1962), as well as adaptations of classic 20th-century American novels such as the film "The Grapes of Wrath" (1940). His four Academy Awards for Best Director (in 1935, 1940, 1941, and 1952) remain a record. One of the films for which he won the award, "How Green Was My Valley", also won Best Picture.  - Serena Jameka Williams (born September 26, 1981) is an American professional tennis player. The Women's Tennis Association (WTA) has ranked her world No. 1 in singles on seven occasions. She became the world No. 1 for the first time on July 8, 2002, and achieved this ranking for the seventh time on January 30, 2017. On the sixth occasion, she held the ranking for 186 consecutive weeks, tying the record set by Steffi Graf for the most consecutive weeks as world No. 1 by a female tennis player. In total, she has been world No. 1 for 310 weeks, which ranks her 3rd in the Open Era among female tennis players. Williams' accomplishments and success in professional tennis have led many to regard her as the greatest female tennis player of all time.  - Althea Gibson (August 25, 1927  September 28, 2003) was an American tennis player and professional golfer, and the first black athlete to cross the color line of international tennis. In 1956, she became the first person of color to win a Grand Slam title (the French Open). The following year she won both Wimbledon and the U.S. Nationals (precursor of the U.S. Open), then won both again in 1958, and was voted Female Athlete of the Year by the Associated Press in both years. In all, she won 11 Grand Slam tournaments, including six doubles titles, and was inducted into the International Tennis Hall of Fame and the International Women's Sports Hall of Fame. "She is one of the greatest players who ever lived," said Robert Ryland, a tennis contemporary and former coach of Venus and Serena Williams. "Martina couldn't touch her. I think she'd beat the Williams sisters." In the early 1960s she also became the first black player to compete on the women's professional golf tour.  - The Associated Press (AP) is an American multinational nonprofit news agency headquartered in New York City that operates as a cooperative, unincorporated association. The AP is owned by its contributing newspapers and radio and television stations in the United States, all of which contribute stories to the AP and use material written by its staff journalists. Most of the AP staff are union members and are represented by the Newspaper Guild, which operates under the Communications Workers of America, which operates under the AFLCIO.    Given the information above, choose from the list below the object entity that exhibits the relation 'genre' with the subject 'the horse soldiers'.  Choices: - art  - book  - child  - country  - design  - dramatic  - education  - entertainment  - family  - fashion  - golf  - james  - mass  - military  - music  - news  - novel  - play  - radio  - reference  - research  - screenplay  - short story  - statuette  - technology  - television  - tennis  - urban  - various  - video  - war  - war film  - welsh  - western  - world war ii
A:
western