Information: - The Rock Island Independents were a professional American football team based in Rock Island, Illinois. One of the first professional football teams, they were founded in 1907 by Demetrius Clements as an independent club. They later played in what is now the National Football League (NFL) from 1920 to 1925. They joined the first American Football League in 1926, but folded along with the league in 1927. They played in Douglas Park (19071925) and Browning Field (1926). Walter Flanigan owned the team from 1915 to 1923; Dale Johnson took over and owned the team until 1926, when the team eventually folded. - Sportsman's Park was the name of several former Major League Baseball ballpark structures in the central United States, in St. Louis, Missouri. All but one of these were located on the same piece of land, at the northwest corner of Grand Boulevard and Dodier Street, on the north side of the city. - Labor Day in the United States is a public holiday celebrated on the first Monday in September. It honors the American labor movement and the contributions that workers have made to the strength, prosperity, laws and well-being of the country. It is the Monday of the long weekend known as Labor Day Weekend and it is considered the unofficial end of summer. The holiday is also a federal holiday. - Christmas or Christmas Day (meaning "Christ's Mass") is an annual festival commemorating the birth of Jesus Christ, observed most commonly on December 25 as a religious and cultural celebration among billions of people around the world. A feast central to the Christian liturgical year, it is prepared for by the season of Advent or the Nativity Fast and initiates the season of Christmastide, which historically in the West lasts twelve days and culminates on Twelfth Night; in some traditions, Christmastide includes an Octave. The traditional Christmas narrative, the Nativity of Jesus, delineated in the New Testament says that Jesus was born in Bethlehem, in accordance with messianic prophecies; when Joseph and Mary arrived in the city, the inn had no room and so they were offered a stable where the Christ Child was soon born, with angels proclaiming this news to shepherds who then disseminated the message furthermore. Christmas Day is a public holiday in many of the world's nations, is celebrated religiously by the vast majority of Christians, as well as culturally by a number of non-Christian people, and is an integral part of the holiday season, while some Christian groups reject the celebration. In several countries, celebrating Christmas Eve on December 24 has the main focus rather than December 25, with gift-giving and sharing a traditional meal with the family. - A single-elimination tournamentalso called an Olympic system tournament, a knockout (or, knock-out), single penetration, or sudden death tournamentis a type of elimination tournament where the loser of each bracket is immediately eliminated from winning the championship or first prize in the event. - St. Louis All - Stars was a professional football team that played in the National Football League during the 1923 season . The team played at St. Louis , Missouri 's Sportsman 's Park . Ollie Kraehe owned , managed , coached and played guard for the team . - A player-coach (also playing coach, captain-coach, or player-manager) is a member of a sports team who simultaneously holds both playing and coaching duties. A player-coach may be a head coach or an assistant coach. They may make changes to the squad and also play on the team. - The Super Bowl is the annual championship game of the National Football League (NFL), the highest level of professional American football in the world. The game is the culmination to a season that begins in the late summer of the previous calendar year. Normally, Roman numerals are used to identify each game, rather than the year in which it is held. For example, Super Bowl I was played on January 15, 1967, following the 1966 regular season. The single exception to this rule is Super Bowl 50, which was played on February 7, 2016, following the 2015 regular season. The next game, Super Bowl LI, scheduled for February 5, 2017, will follow the 2016 regular season. - Oliver Robert Kraehe (August 22, 1898 December 19, 1966) was a professional football player for the Rock Island Independents in 1922. In 1923, he founded the St. Louis All Stars and served, not only as a player-coach, but as the team's manager and owner. - 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. - St. Louis is an independent city and major U.S. port in the State of Missouri, built along the western bank of the Mississippi River, on the border with Illinois. The city has an estimated 2015 population of 315,685, and is the cultural and economic center of the Greater St. Louis area (home to 2,916,447 people), making it the largest metropolitan area in Missouri and the 19th-largest in the United States. - The National Football Conference (NFC) 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 American Football Conference (AFC), 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 while the remaining thirteen NFL clubs formed 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. - American football, referred to as football in the United States and Canada, and also known as gridiron, is a sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with control of the oval-shaped football, attempts to advance down the field by running with or passing the ball, while the team without control of the ball, the defense, aims to stop their advance and take control of the ball for themselves. The offense must advance at least ten yards in four downs, or plays, or else they turn over the football to the opposing team; if they succeed, they are given a new set of four downs. Points are primarily scored by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal. The team with the most points at the end of a game wins. - At the end of each Major League Baseball season, the league leaders of various statistical categories are announced. Leading the league in a particular category is referred to as a "title". - 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. - Missouri (see pronunciations) is a state in the Midwestern region of the United States, achieving statehood in 1821. With over six million residents, it is the eighteenth most populous state and host to the mean center of United States population. The largest urban areas are St. Louis, Kansas City, Springfield, and Columbia. The capitol is in Jefferson City on the Missouri River. The state is the twenty-first most extensive by area and is geographically diverse. The Northern Plains were once covered by glaciers, then tallgrass prairie, and now the deep soils yield great agricultural productivity. In the South are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Mississippi River forms the eastern border of the state, eventually flowing into the swampy Missouri Bootheel. Given the paragraphs above, decide what entity has the relation 'instance of' with 'american football team'.
Answer:
st. louis all-stars