Question: Who was the founding owner of the Pittsburgh Steelers whose son spearheaded a requirement known as the "Rooney Rule?"
Context: The Art Rooney Pace is an American harness racing event for three-year-old standardbred pacers run each year at Yonkers Raceway with the exception of 2006 when it was hosted by Monticello Raceway.  First run in 1989, it is named in honor of Art Rooney (1901-1988), owner of several racetracks, including Yonkers, plus the Pittsburgh Steelers of the National Football League. Nicholas "Nick" Shuk (September 30, 1930 - October 1983) was an American jockey in thoroughbred horse racing.  He began his career in 1948 as a contract rider for Art Rooney, owner of the Pittsburgh Steelers football team.  In the 1950s, Shuk won the Maryland jockey title seven times and was the leading jockey at Delaware Park Racetrack three times.  He handled such stars as Art Rooney's Little Harp, Brazen Brat, Cida, Tuscany, and Singing Beauty.  Shuk rode Laffango, one of the top two-year-olds of 1952. The Chief is a 2003 biographical one-man play about the Pittsburgh Steelers' founder and owner Art Rooney (1901–1988).  The Pittsburgh Public Theater show has had several revivals since its inauguration, with each production performed by Pittsburgh native Tom Atkins. Kevin Colbert (born January 1957) is the general manager of the National Football League's Pittsburgh Steelers since the start of 2000.  He is widely credited with putting together the Super Bowl XL and the Super Bowl XLIII teams in Pittsburgh along with owner Dan Rooney, president Art Rooney II, and coaches Bill Cowher and Mike Tomlin. The 1933 Pittsburgh Pirates was the debut season of the team that would eventually become the Pittsburgh Steelers.  The team was founded after Pennsylvania relaxed its blue laws that, prior to 1933, prohibited sporting events from taking place on Sundays, when most NFL games took place.  The new squad was composed largely of local semi-pro players, many of whom played for sports promoter Art Rooney.  Rooney became the Pirates owner, paying the NFL a $2,500 fee to join the league.  Except for a brief period in , Rooney would remain the franchise's principal owner until his death in 1988.  The Rooney family has retained a controlling interest ever since. Daniel Milton Rooney (July 20, 1932 – April 13, 2017) was chairman of the Pittsburgh Steelers, an American football team in the National Football League (NFL), and son of the Steelers' founder, Art Rooney.  Dan Rooney was elected to the Pro Football Hall of Fame in 2000 for his contributions to the game.  He was credited with spearheading a requirement that NFL teams with head coach and general manager vacancies interview at least one minority candidate, which has become known as the "Rooney Rule". Ralph Cookerly Wilson Jr. (October 17, 1918 – March 25, 2014) was as an American businessman and sports executive.  He was best known as the founder and owner of the Buffalo Bills, a team in the National Football League (NFL).  He was one of the founding owners of the American Football League (AFL), the league with which the NFL merged in 1970, and was the last of the original AFL owners to own his team.  At the time of his death he was the oldest owner in the NFL, at age 95, and the third-longest tenured owner in NFL history (over 54 years, behind the 63 years George Halas owned the Chicago Bears and almost equal to the 55 years Art Rooney owned the Pittsburgh Steelers, although Rooney's ownership and team operations were interrupted in the 1940s due to some complicated dealings).  He was inducted into the Pro Football Hall of Fame in 2009. The Art Rooney Award is given annually by the National Football League recognizing outstanding sportsmanship on the playing field.  Established in 2015, the award is named in honor of Art Rooney, Sr., the founding owner of the Pittsburgh Steelers and a member of the National Football League Hall of Fame. Arthur Joseph Rooney Sr. (January 27, 1901 – August 25, 1988), often referred to as "The Chief", was the founding owner of the Pittsburgh Steelers, an American football franchise in the National Football League (NFL), from 1933 until his death.  Rooney is a member of the Pro Football Hall of Fame, was an Olympic qualifying boxer, and was part or whole owner in several track sport venues and Pittsburgh area pro teams.  He was the first president of the Pittsburgh Steelers from 1933 to 1974, and the first chairman of the team from 1933 to 1988. Alan Glenn Haller is a retired professional American football player who played defensive back in the National Football League with the Pittsburgh Steelers, Cleveland Browns and Carolina Panthers.  Haller was drafted in the 5th round of the 1992 draft by the Pittsburgh Steelers.  He would play his first three games with the Steelers before he was released and signed with the Cleveland Browns where he played another three games.  He returned to the Steelers in 1993 and joined the expansion Carolina Panthers in 1995 before retiring after the 1995 season.  In his professional career, Haller played only 12 games in three seasons, earning no starts and no statistics.  Though he was a defensive back, Haller played mostly as a special teams player.
Answer: Arthur Joseph Rooney Sr.