Information:  - The American Football Conference (AFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. This conference and its counterpart, the National Football Conference (NFC), currently contain 16 teams each, making up the 32 teams of the NFL. Both conferences were created as part of the 1970 merger with the rival American Football League (AFL), with all ten of the former AFL teams and three NFL teams forming the AFC, and the remaining thirteen NFL clubs forming the NFC. A series of league expansions and division realignments have occurred since the merger, thus making the current total 16 clubs per each conference.  - John Earl Madden (born April 10, 1936) is a former American football coach and broadcaster for the National Football League. He won a Super Bowl as head coach of the Oakland Raiders in the American Football Conference of the NFL, and after retiring from coaching became a well-known color commentator for NFL telecasts. In 2006, he was inducted into the Pro Football Hall of Fame in recognition of his coaching career. He is also widely known for the long-running "Madden NFL" video game series he has endorsed and fronted since 1988. Madden worked as a color analyst for all four major networks: CBS (19791993), Fox (19942001), ABC (20022005), and NBC (20062009).  - Madden NFL (known as John Madden Football before 1993) is an American football video game series developed by EA Tiburon for EA Sports. It is named after Pro Football Hall of Famer John Madden, a well-known former Super Bowlwinning coach of the Oakland Raiders and color commentator. The series has sold more than 100 million copies, and influenced many players and coaches of the physical sport. Among the game's realistic features are sophisticated playbooks and player statistics, and voice commentary that allows players to hear the game as if it were a real TV broadcast. As of September 2013, the franchise generated over $4 billion in revenue.  - John Madden Football II is a football video game . It features John Madden on the cover . This edition had updates such as larger playbooks and more insight from John Madden .  - The Oakland Raiders are a professional American football franchise based in Oakland, California. The team commenced operations in 1960 as a member of the American Football League (AFL); they are currently members of the National Football League (NFL), which merged with the AFL in 1970. The Raiders currently compete in the NFL as a member club of the league's American Football Conference (AFC) West division and play their home games at the OaklandAlameda County Coliseum. At the end of the NFL's 2015 season, the Raiders boasted a lifetime regular season record of 444 wins, 397 losses, and 11 ties; their lifetime playoff record currently stands at 25 wins and 18 losses.  - The Pro Football Hall of Fame is the hall of fame for professional American football , there are a total of 303 members of the Hall of Fame.  - The National Football League (NFL) is a professional American football league consisting of 32 teams, divided equally between the National Football Conference (NFC) and the American Football Conference (AFC). The NFL is one of the four major professional sports leagues in North America, and the highest professional level of American football in the world. The NFL's 17-week regular season runs from the week after Labor Day to the week after Christmas, with each team playing 16 games and having one bye week. Following the conclusion of the regular season, six teams from each conference (four division winners and two wild card teams) advance to the playoffs, a single-elimination tournament culminating in the Super Bowl, played between the champions of the NFC and AFC.    Given the information above, choose from the list below the object entity that exhibits the relation 'series' with the subject 'john madden football ii'.  Choices: - afl  - fame  - madden nfl  - north america
The answer to this question is:
madden nfl