Question: The New York Nets played a doubleheader against a team from from what league?
Context: The 1970–71 New York Nets season was the fourth season of the franchise.  On January 6, 1971, during a game versus the Memphis Pros, referee Andy Hershock suffered a heart attack, later dying in the medical office at Island Garden.  The game was later restarted, with the Nets winning 110-101.  Two months later, they played the Kentucky Colonels in a doubleheader benefit game for Hershock. The 1968–69 Houston Mavericks season was the second and final season of the Mavericks in the American Basketball Association.  By this point, attendance were at all-time lows at home for the Mavericks, who trudged to finish dead last in a much improved Division, 18 games behind the 4th place Dallas Chaparrals.  T.C. Morrow announced to the league that he would not put any more money into the team midway through the year, and the league stepped in to make sure the team did not fold midway through, making trades and such.  In January 1969, Jim Gardner agreed to buy the team for $650,000 to move them to North Carolina, which would occur after the season.  One bright spot was their performance on January 17, 1969, when the team made 36 of 36 free throws in a 130–118 victory over the New York Nets.  April 2, 1969 was the final game in Houston, with a reported attendance of 89, though the Mavericks beat the New York Nets 149–132.  The next night, in their final ever game (versus the Dallas Chaparrals), they lost 136–144.  The team lived on in Carolina, playing as a regional team.  Houston would not have a pro basketball team until 1971, with the Houston Rockets. The Brooklyn Nets are an American professional basketball team based in Brooklyn, New York.  They are a member of the Atlantic Division of the Eastern Conference in the National Basketball Association (NBA).  The team plays its home games at the Barclays Center.  The franchise was founded as the New Jersey Americans in 1967, and was one of the eleven original American Basketball Association (ABA) teams.  In its second ABA season, Arthur Brown, the team owner, moved the team to Long Island and renamed it the New York Nets.  The team won ABA championships in 1974 and 1976.  When the ABA merged with the NBA in 1976, the Nets were one of four ABA teams admitted into the NBA.  The team was moved to the Rutgers Athletic Center in New Jersey; after the 1976–77 NBA season, the team was renamed the New Jersey Nets.  Since they joined the NBA, the Nets have won 4 divisional championships, 2 conference championships and appeared in the playoffs 16 times.  The Nets moved to Brooklyn in 2012, and now play as the Brooklyn Nets. The 1976 ABA All Star Game was the 9th and final American Basketball Association All-Star Game, played at McNichols Arena in Denver, Colorado on January 27, 1976.  This time, the league abandoned the usual East vs. West format it used from the 1967-68 season onward and instead had the league's first place team at the All Star break face off against a team of ABA All Stars.  At the All Star break the Denver Nuggets were in first place, which was convenient as the Nuggets had also been selected to host the game in McNichols Arena.  Kevin Loughery of the New York Nets coached the All-Stars while Larry Brown led the Denver Nuggets.  This was the second year in a row that Loughery and Brown coached against each other in the ABA All-Star Game.  (The Nuggets went on to finish the regular season in first place at 60-24 (.714), but after beating the Kentucky Colonels 4 games to 3 in the ABA Semifinals the Nuggets lost in the 1976 ABA Finals to the New York Nets, 4 games to 2.) This is a list of seasons completed by the Brooklyn Nets professional basketball franchise.  The Nets were founded as the New Jersey Americans in 1967, a charter franchise of the American Basketball Association (ABA).  A year later, the team moved to Long Island, New York, and were renamed as the New York Nets.  There, behind the play of Hall of Famer Julius Erving, the team won its only two ABA championships: in 1974 and 1976.  After the 1975–76 season, the ABA merged with the National Basketball Association (NBA), and the Nets were one of four franchises who joined the older league.  After a season of being the second team to represent the state of New York, (along with the New York Knicks), the team moved back to New Jersey as the New Jersey Nets. The New Orleans Sun Belt Nets were a charter franchise of World Team Tennis (WTT).  The team first played as the Cleveland Nets in 1974, and was known as the Cleveland-Pittsburgh Nets in 1977, when it played roughly half of its home matches in each city.  The Nets moved to New Orleans for the 1978 season.  Following the 1978 season, the Nets announced that the team would fold.  The Nets played all five seasons in WTT from the league's inception in 1974, until its suspension of operations after the 1978 season.  The team had losing records in each of its five seasons. The Brooklyn Nets are an American professional basketball team based in the New York City borough of Brooklyn.  The Nets compete in the National Basketball Association (NBA) as a member club of the Atlantic Division of the Eastern Conference.  The team plays its home games at Barclays Center.  They are one of two NBA teams located in New York City; the other are the New York Knicks.  The team was established in 1967 as a charter franchise of the NBA's rival league, the American Basketball Association (ABA).  They played in New Jersey as the New Jersey Americans during their first season, before moving to Long Island in 1968 and changing their name to the New York Nets.  During this time, the Nets won two ABA championships (in 1974 and 1976).  In 1976, the ABA merged with the NBA, and the Nets were absorbed into the NBA along with three other ABA teams (the San Antonio Spurs, Indiana Pacers and Denver Nuggets, all of whom remain in the league today). The Kentucky Colonels were a member of the American Basketball Association for all of the league's nine years.  The name is derived from the historic Kentucky colonels.  The Colonels won the most games and had the highest winning percentage of any franchise in the league's history, but the team did not join the NBA in the 1976 ABA–NBA merger.  The downtown Louisville Convention Center (now known as The Gardens) was the Colonels' original venue for the first three seasons before moving to Freedom Hall for the remaining seasons, beginning with the 1970–71 schedule. The 1977 NBA draft was the 31st annual draft of the National Basketball Association (NBA).  The draft was held on June 10, 1977, before the 1977–78 season.  In this draft, 22 NBA teams took turns selecting amateur U.S. college basketball players and other eligible players, including international players.  The first two picks in the draft belonged to the teams that finished last in each conference, with the order determined by a coin flip.  The Milwaukee Bucks won the coin flip and were awarded the first overall pick, while the Kansas City Kings, who obtained the New York Nets first-round pick in a trade, were awarded the second pick.  The remaining first-round picks and the subsequent rounds were assigned to teams in reverse order of their win–loss record in the previous season.  A player who had finished his four-year college eligibility was eligible for selection.  If a player left college early, he would not be eligible for selection until his college class graduated.  Before the draft, six college underclassmen were declared eligible for selection under the "hardship" rule.  These players had applied and gave evidence of financial hardship to the league, which granted them the right to start earning their living by starting their professional careers earlier.  Four former American Basketball Association (ABA) franchises who joined the NBA when both leagues merged, the Denver Nuggets, the Indiana Pacers, the New York Nets and the San Antonio Spurs, took part in the NBA Draft for the first time.  Prior to the start of the season, the Nets relocated to New Jersey and became the New Jersey Nets.  The draft consisted of 8 rounds comprising the selection of 170 players. The 1973–74 Virginia Squires season was the 4th season of the Squires in the American Basketball Association.  The team finished 6th in points scored at 106.3 points per game and 9th in points allowed at 111.3 points per game.  The team was 15–27 midway through the season, but they went 13–29 in the second half of the season.  Their biggest losing streak was 6 games, with their highest winning streak being 3 games, done twice.  Despite this, they clinched the fourth and final playoff spot by 7 games.  The Squires lost to Dr. J and the New York Nets in the Semifinals in 5 games.  The money troubles that had troubled the franchise meant that the Squires were forced to trade away pivotal players of the franchise in order to provide short term stability.  Julius Erving (along with Willie Sojourner) was traded to the New York Nets for George Carter and cash before the season started.  Swen Nater was traded on November 21, 1973 to the San Antonio Spurs.  The night of the All-Star Game, it was announced that the Squires sold George Gervin to the San Antonio Spurs for $225,000.  Gervin's last game with the team was on February 1, but a court battle delayed his play with the Spurs, though it was all settled in favor of the Spurs by March 3.  This was the last season the Squires made the playoffs as they went into a tailspin for the next two season, losing over 60 games each season.
Answer: American Basketball Association