Question: When did the film inspired by the Ali vs. Wepner fight come out?

full_context: Document 1: Cassius Clay vs. Sonny Banks: Cassius Clay (soon Muhammad Ali) fought Sonny Banks in a ten-round boxing match at Madison Square Garden in New York City on February 10, 1962. Clay won the fight through a technical knockout when the referee stopped the fight in the fourth round. The event is remembered for being the first professional boxing match in which Ali was officially knocked down in the ring by his boxing opponent.
Document 2: Rocky V: Rocky V is a 1990 American sports drama film. It is the fifth film in the "Rocky" series, written by and starring Sylvester Stallone, and co-starring Talia Shire, Stallone's real-life son Sage, and real-life boxer Tommy Morrison, with Morrison in the role of Tommy Gunn, a talented yet raw boxer. Sage played Robert Balboa, whose relationship with his famous father is explored. After Stallone directed the second through fourth films in the series, "Rocky V" saw the return of John G. Avildsen, whose direction of "Rocky" won him an Academy Award for Best Directing.
Document 3: Apollo Creed: Apollo Creed is a fictional character from the "Rocky" films, initially portrayed as the undisputed heavyweight champion of the world. He was played by Carl Weathers. He is a tough but agile African-American boxer. The character was inspired by the real-life champion Muhammad Ali, having what one author remarked as the same "brash, vocal, [and] theatrical" personality. Protagonist Rocky Balboa, Creed's rival in "Rocky" and "Rocky II", faces underdog odds (five-to-one in "Rocky II") and views Creed with respect, pointedly refusing the prodding of a reporter to "trash talk" against Creed by laconically remarking, "He's great."
Document 4: Rocky: Rocky is a 1976 American sports drama film directed by John G. Avildsen and both written by and starring Sylvester Stallone. It tells the rags to riches American Dream story of Rocky Balboa, an uneducated but kind-hearted working class Italian-American boxer working as a debt collector for a loan shark in the slums of Philadelphia. Rocky starts out as a small-time club fighter, and later gets a shot at the world heavyweight championship. The film also stars Talia Shire as Adrian, Burt Young as Adrian's brother Paulie, Burgess Meredith as Rocky's trainer Mickey Goldmill, and Carl Weathers as the champion, Apollo Creed.
Document 5: Chuck Wepner: Charles "Chuck" Wepner (born February 26, 1939) is an American former professional boxer who fought at heavyweight. As a world ranked contender he fell just seconds short of a full fifteen rounds with world heavyweight champion Muhammad Ali in a 1975 title fight. Wepner also scored notable wins over Randy Neumann and Ernie Terrell.
Document 6: The Rumble in the Jungle: The Rumble in the Jungle was a historic boxing event in Kinshasa, Zaire (now Democratic Republic of the Congo) on October 30, 1974 (at 4:00 am). Held at the 20th of May Stadium (now the Stade Tata Raphaël), it pitted the undefeated world heavyweight champion George Foreman against challenger Muhammad Ali, a former heavyweight champion; the attendance was 60,000. Ali won by knockout, putting Foreman down just before the end of the eighth round. It has been called "arguably the greatest sporting event of the 20th century". The event was one of Don King's first ventures as a professional boxing promoter.
Document 7: Rocky (film series): Rocky is a series of boxing films based on the eponymous, fictional character Rocky Balboa, played in each film by Sylvester Stallone. The films by order of release date are: "Rocky" (1976), "Rocky II" (1979), "Rocky III" (1982), "Rocky IV" (1985), "Rocky V" (1990), "Rocky Balboa" (2006) and "Creed" (2015). The film series has grossed more than $1.4 billion at the worldwide box office.
Document 8: Sylvester Stallone: Michael Sylvester "Sly" Gardenzio Stallone ( ; ] ; born July 6, 1946) is an American actor and filmmaker. He is well known for his Hollywood action roles, including boxer Rocky Balboa, the title character of the "Rocky" series' seven films from 1976 to 2015; soldier John Rambo from the four "Rambo" films, released between 1982 and 2008; and Barney Ross in the three "The Expendables" films from 2010 to 2014. He wrote or co-wrote most of the 14 films in all three franchises, and directed many of the films.
Document 9: Rocky Balboa: Robert "Rocky" Balboa is the title character of the "Rocky" series. The character was created by Sylvester Stallone, who also portrayed him in all seven "Rocky" films. He is depicted as an everyman who started out by going the distance and overcoming obstacles that had occurred in his life and career as a professional boxer. While he is loosely based on Chuck Wepner, a one-time boxer who fought Muhammad Ali and lost on a TKO in the 15th round, the inspiration for the name, iconography and fighting style came from boxing legend Rocky Marciano.
Document 10: Muhammad Ali vs. Antonio Inoki: The fight between American boxer Muhammad Ali and Japanese professional wrestler Antonio Inoki was held at the Nippon Budokan arena in Tokyo on June 26, 1976. At the time, Ali had come off a knockout victory over Richard Dunn in May and was the reigning WBC/WBA Heavyweight Champion. Inoki, who had been taught the art of catch wrestling by legendary wrestler Karl Gotch, was staging exhibition fights against champions of various martial arts, in an attempt to show that pro wrestling was the dominant fighting discipline.
Document 11: Cassius Clay vs. Donnie Fleeman: Cassius Clay (soon Muhammad Ali) fought an eight-round boxing match with Texan Donnie Fleeman in Miami on February 21, 1961. Prior to this fight, Fleeman had a record of 51 fights with 45 wins including 20 knockouts. Clay won the bout through a technical knockout after the referee stopped the fight in the seventh round. This was the first time Clay had gone over six rounds in a boxing match. It was also the first time Fleeman had ever been knocked down in a boxing match. Fleeman retired from boxing after this fight.
Document 12: Carl Weathers: Carl Weathers (born January 14, 1948) is an American actor and former professional football player. He is best known for portraying Apollo Creed in the "Rocky" series of films, George Dillon in "Predator", Chubbs Peterson in "Happy Gilmore" and "Little Nicky", and a fictionalized version of himself on the comedy series "Arrested Development". As a football player, Weathers played for the Oakland Raiders of the National Football League and the B.C. Lions of the Canadian Football League.
Document 13: Muhammad Ali vs. Chuck Wepner: Muhammad Ali and Chuck Wepner fought each other in a boxing match on March 24, 1975. This was Ali's first boxing bout after The Rumble in the Jungle. The fight was billed as "Give the White Guy a Break". Ali won the fight after he knocked out Wepner in the fifteenth round.The fight is notable for being among the four fights in which Ali was officially knocked down in the ring, and for inspiring the 1976 film "Rocky".
Document 14: Rocky IV: Rocky IV is a 1985 American sports drama film written, directed by, and starring Sylvester Stallone. The film co-stars Dolph Lundgren, Burt Young, Talia Shire, Carl Weathers, Tony Burton, Brigitte Nielsen, and Michael Pataki. "Rocky IV" remained the highest grossing sports movie for 24 years before it was overtaken by "The Blind Side". It is the fourth and most financially successful entry in the "Rocky" film series.
Document 15: Muhammad Ali vs. Sonny Liston: The two fights between Muhammad Ali and Sonny Liston for boxing's World Heavyweight Championship were among the most anticipated, watched and controversial fights in the sport's history. "Sports Illustrated" magazine named their first meeting, the Liston–Clay fight (Ali had not yet changed his name from Cassius Clay), as the fourth greatest sports moment of the twentieth century.
ground_truth: 1976