Question: Which professional sports league, founded in 1967, did coach Lou Carnesecca work in before coaching the St. John's Redmen?
Context: The 1969–70 St. John's Redmen basketball team represented St. John's University during the 1969–70 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his fifth year at the school before he left to become the head coach of the New York Nets in the American Basketball Association.  St. John's home games were played at Alumni Hall and Madison Square Garden. The 1973–74 St. John's Redmen basketball team represented St. John's University during the 1973–74 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his sixth year at the school and his first since returning from coaching the New York Nets in the ABA.  St. John's home games are played at Alumni Hall and Madison Square Garden. The 1965–66 St. John's Redmen basketball team represented St. John's University during the 1965–66 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his first year at the school after Joe Lapchick's retirement.  St. John's home games were played at Alumni Hall and Madison Square Garden. The 1967–68 St. John's Redmen basketball team represented St. John's University during the 1967–68 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his third year at the school.  St. John's home games were played at Alumni Hall and Madison Square Garden. The 1966–67 St. John's Redmen basketball team represented St. John's University during the 1966–67 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his second year at the school.  St. John's home games were played at Alumni Hall and Madison Square Garden. The original American Basketball Association (ABA) was a major-league professional basketball league founded in 1967.  The ABA ceased to exist with the American Basketball Association–National Basketball Association merger in 1976, leading several teams to join the National Basketball Association and the introduction of the 3-point shot in the NBA. Carnesecca Arena (formerly Alumni Hall) is a 5,602-seat multi-purpose arena in the borough of Queens in New York City, New York.  It was built in 1961 and renamed in honor of Hall of Fame Coach Lou Carnesecca on November 23, 2004.  It is the exclusive home to the St. John's University Red Storm women's basketball team, and also hosts the men's team, mainly for games that are not expected to draw a crowd sufficient to fill Madison Square Garden.  The building hosted first round games of the NCAA men's basketball tournament from 1970 to 1974.  Up until March 2014, it was the last place in New York City that the tournament was held. The 1970–71 St. John's Redmen basketball team represented St. John's University during the 1970–71 NCAA Division I men's basketball season.  The team was coached by Frank Mulzoff in his first year at the school after Lou Carnesecca left to become the head coach of the New York Nets in the American Basketball Association.  St. John's home games are played at Alumni Hall and Madison Square Garden. The 1986–87 St. John's Redmen basketball team represented St. John's University during the 1986–87 NCAA Division I men's basketball season.  The team was coached by Lou Carnesecca in his nineteenth year at the school.  St. John's home games are played at Alumni Hall and Madison Square Garden and the team is a member of the Big East Conference. The 1992–93 St. John's Redmen basketball team represented St. John's University during the 1992–93 NCAA Division- basketball season.  The team was coached by Brian Mahoney in his first year at the school after replacing long time head coach Lou Carnesecca.  St. John's home games are played at Alumni Hall and Madison Square Garden and the team is a member of the Big East Conference.
Answer: American Basketball Association