query: member_of_sports_team john perko
supports: John Joseph Perko ( February 20 , 1914 - June 7 , 1994 ) was a professional football player for eight seasons in the National Football League . He played for Pittsburgh Pirates - Steelers his entire career . In 1944 , he also played on the Steelers - Chicago Cardinals merged team , `` Card - Pitt '' . Prior to playing professional football , Perko played at the college level while attending Duquesne University . 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. The Philadelphia Eagles are a professional American football franchise based in Philadelphia, Pennsylvania. The Eagles compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division. Card-Pitt was the name for the team created by the temporary merger of two National Football League (NFL) teams, the Pittsburgh Steelers and the Chicago Cardinals, during the 1944 season. It was the second such merger for the Steelers, who had combined with the Philadelphia Eagles in 1943 to form the "Steagles". The arrangement was made necessary by the loss of numerous players to World War II military service, and was dissolved upon completion of the season. The war ended before the start of the 1945 season, and both teams resumed normal operations. The Pittsburgh Steelers are a professional American football team based in Pittsburgh, Pennsylvania. The Steelers compete in the National Football League (NFL), as a member club of the league's American Football Conference (AFC) North division. Founded in , the Steelers are the oldest franchise in the AFC. 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. The Steagles were the team created by the temporary merger of two National Football League (NFL) teams, the Pittsburgh Steelers and the Philadelphia Eagles, during the 1943 season. The teams were forced to merge because both had lost many players to military service during World War II. The league's official record book refers to the team as "Phil-Pitt Combine", but the unofficial "Steagles," despite never being registered by the NFL, has become the enduring moniker.
candidates: chicago cardinals eagles pittsburgh steelers sport
answer: pittsburgh steelers