Question: What year was the AFC football team founded that Charles Louis Bivins played for?

Context paragraphs:
Pittsburgh Steelers: 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 1933 , the Steelers are the oldest franchise in the AFC.

Levallois SC: Levallois Sporting Club Football is a French association football team founded in 1894.  They are based in Levallois-Perret, France and are currently playing in the Championnat de France Amateurs Group A, the fourth tier in the French football league system.  Former Chelsea striker Didier Drogba played youth football with Levallois and they have named their new Stadium after Didier Drogba.

Aung Thu (footballer): Aung Thu (Burmese: အောင်သူ ; born 22 May 1996) is a footballer from Myanmar, and a striker for the Myanmar U-19 national football team and Yadanarbon FC.  He was born in Pyinmana, Mandalay.  In 2009, he joined the Myanmar Football Academy in Mandalay.  He had played for U-16 and has begun playing for the Myanmar national football team.  Aung Thu first appeared in national under 16 team that took part in 2011 AFF U-16 Youth Championship.  He scored a goal against Qatar in 2014 AFC U-19 Championship in Myanmar which the team eventually lost in the extra time.  He is fond of Messi.  His performance helped the U-19 Myanmar National Team advance to the FIFA U-20 World Cup for the first time in Myanmar football history.  This was the first time that a Myanmar football team taking part in a world level tournament after Myanmar had qualified for the football tournament in the 1972 Summer Olympics in Munich, Germany.  He also won the most valuable player award of the year in early 2015 January.  He scored a leading goal for Myanmar against New Zealand in the 2015 FIFA U-20 World Cup.  He scored his first international goal for Myanmar National Football team against Laos 3-1 in 2018 World Cup qualification(AFC).

KSF Zielona Góra: KSF Zielona Góra is a football team founded by speedway fans of Falubaz in 2010.  They started from the bottom of the football pyramid in the local amateur divisions.  However, they have been promoted every year since their existence, four promotions in a row and started the 2014/15 season in the IV liga, the fifth tier.

Vitória S.C. B: Vitória Guimarães B is a Portuguese football team founded in 2012.  They are the reserve team of Vitória Guimarães.  Reserve teams in Portugal play in the same league system as the senior team, rather than in a reserve team league.  However, they cannot play in the same division as their senior team, so Vitória B is ineligible for promotion to the Primeira Liga and cannot play in the Taça de Portugal and Taça da Liga.

Cleveland Panthers: The Cleveland Panthers were a professional American football team.  They were an independent team founded in 1919 from the remains of the Youngstown Patricians.  The Panthers played, with various degrees of success, continuously from 1919 and eventually, as fewer opponents played them each year after 1926, sputtered to a quiet folding in 1933.

Staten Island Stapletons: The Staten Island Stapletons also known as the Staten Island Stapes were a professional American football team founded in 1915 that played in the National Football League from 1929 to 1932.  The team was based in the Stapleton section of Staten Island.  They played under the shortened nickname the "Stapes" the final two seasons.  Jack Shapiro, who was a blocking back for the Stapletons, was the shortest player in NFL history.  The team was based in Staten Island, New York.

Charlie Bivins: Charles Louis Bivins (born October 16, 1938 – died March 15, 1994) was a retired American football running back who played for the National Football League's Chicago Bears and Pittsburgh Steelers and the American Football League's Buffalo Bills.  Bivins played college football at Morris Brown College.

2014–15 Vitória S.C. B season: Vitória Guimarães B is a Portuguese football team founded in 2012.  They are the reserve team of Vitória Guimarães.  Reserve teams in Portugal play in the same league system as the senior team, rather than in a reserve team league.  However, they cannot play in the same division as their senior team, so Vitória B is ineligible for promotion to the Primeira Liga and cannot play in the Taça de Portugal and Taça da Liga.

Trenton Lightning: The Trenton Lightning were an indoor professional football team founded in 2000 by owner/general manager, Phillip J. Subhan and local businessman, Kenneth Samu.  The team started the 2001 season in the Indoor Professional Football League (IPFL) and were led by head coach (ex-NFL RB) Vaughn Hebron (played for the Philadelphia Eagles, Denver Broncos and Indianapolis Colts) and the team played its home games at the Sovereign Bank Arena, capacity 7,605 in Trenton, NJ.  The team was originally scheduled for a 16-game season (eight home and eight away games), But, the team was to fold after only 6 games.  The team's Director of Football operations was Marty Yukichak and the team had a front office staff of seven others in addition to a coaching staff of eight, including Hebron.  The team's defensive coordinator was Chuck Murphy and offensive coordinator was Tom Cocuzza.

Supporting paragraphs: Charlie Bivins Pittsburgh Steelers
Answer: 1933