Question: What NBA Executive of the Year is currently a general manager and President of Basketball Operations for the Boston Celtics? 

Context paragraphs:
Red Auerbach: Arnold Jacob "Red" Auerbach (September 20, 1917 – October 28, 2006) was an American basketball coach of the Washington Capitols, the Tri-Cities Blackhawks and the Boston Celtics.  After he retired from coaching, he served as president and front office executive of the Celtics until his death.  As a coach, he won 938 games (a record at his retirement) and nine National Basketball Association (NBA) championships in ten years (a number surpassed only by Phil Jackson, who won 11 in twenty years).  As general manager and team president of the Celtics, he won an additional seven NBA titles, for a grand total of 16 in a span of 29 years, making him one of the most successful team officials in the history of North American professional sports.

Danny Ainge: Daniel Ray Ainge (born March 17, 1959) is an American basketball executive and former professional basketball and baseball player.  Ainge is currently the general manager and President of Basketball Operations for the Boston Celtics of the National Basketball Association (NBA).

2017–18 Cleveland Cavaliers season: The 2017–18 Cleveland Cavaliers season will be the 48th season of the franchise in the National Basketball Association (NBA).  The Cavaliers will enter the season as the 3-time defending Eastern Conference champions and a runner up from the 2017 NBA Finals.  On June 19, 2017, the Cavaliers general manager David Griffin agreed to leave the team.  During July, Cleveland competed in the MGM Resorts Summer League in Las Vegas, winning 4 of 5 games.  On July 24, 2017, the Cavaliers named Koby Altman as their new general manager.  On August 22, 2017, the Cavaliers traded away Kyrie Irving to the rival Boston Celtics in exchange for Isaiah Thomas, Jae Crowder, Ante Žižić, and the rights to the Brooklyn Nets' first round pick in the 2018 NBA draft; the trade would later be expanded with the Cavaliers acquiring a 2020 second round pick from the Miami Heat eight days afterward due to concerns over the health of Thomas's hip.  On September 28, during training camp, Dwyane Wade would sign a one-year deal with Cleveland.  The Cavs will play the first regular season game of the year on October 17, 2017 against the Boston Celtics.

1951 NBA All-Star Game: The 1951 NBA All-Star Game was an exhibition basketball game played on March 2, 1951, at Boston Garden in Boston, Massachusetts, home of the Boston Celtics.  The game was the first edition of the National Basketball Association (NBA) All-Star Game and was played during the 1950–51 NBA season.  The idea of holding an All-Star Game was conceived during a meeting between NBA President Maurice Podoloff, NBA publicity director Haskell Cohen and Boston Celtics owner Walter A. Brown.  At that time, the basketball world had just been stunned by the college basketball point-shaving scandal.  In order to regain public attention to the league, Cohen suggested the league to host an exhibition game featuring the league's best players, similar to the Major League Baseball's All-Star Game.  Although most people, including Podoloff, were pessimistic about the idea, Brown remained confident that it would be a success.  He even offered to host the game and to cover all the expenses or potential losses incurred from the game.  The Eastern All-Stars team defeated the Western All-Stars team 111–94.  Boston Celtics' Ed Macauley was named as the first NBA All-Star Game Most Valuable Player Award.  The game became a success, drawing an attendance of 10,094, much higher than that season's average attendance of 3,500.

History of the Boston Celtics: The Boston Celtics are an American professional basketball team based in Boston.  Founded in 1946 as a charter member of the Basketball Association of America, the Celtics then moved into the National Basketball Association (NBA) in 1949, as said league was formed by the merger of the BAA merged with the National Basketball League.  Currently playing in the Atlantic Division of the Eastern Conference, the Celtics have the most NBA titles with 17 championships.  Eleven of those occurred between 1957 and 1969, with a dynasty led by center Bill Russell and coach/general manager Red Auerbach.  The Celtics won two more titles in the 1970s under coach Tom Heinsohn, and three more in the 1980s under the leadership of forward Larry Bird.  After a 22-year drought, the Celtics got their latest title in 2008.

Donnie Nelson: Donn Charles Nelson (born September 10, 1962 in Iowa City, Iowa) is an American basketball executive.  He is currently the general manager and president of basketball operations for the Dallas Mavericks of National Basketball Association (NBA).  He is the son of Don Nelson, the former head coach of the Golden State Warriors and the Dallas Mavericks.  In a 2007 Sports Illustrated article ranking the NBA's personnel bosses from 1 to 30, Nelson was ranked No. 2.  In a 2009 Yahoo! Sports article Nelson was ranked the third best general manager of the decade after producing nine 50-plus win seasons in a row and the first Finals appearance in franchise history in 2006.  Nelson assembled the Mavericks team that would later win the 2011 NBA Championship.

2015–16 Philadelphia 76ers season: The 2015–16 Philadelphia 76ers season was the 77th season of the franchise in the National Basketball Association (NBA).  It was also the second straight season that Joel Embiid, their third pick in the 2014 NBA draft, would not suit up for the 76ers due to a leg injury.  Philadelphia broke the record for the longest losing streak in American professional sports history with 27 straight losses over this season and last season with a 114–116 loss to the Houston Rockets.  The losing streak would reach to 28 games (with the 18 straight losses tying the record for longest opening season losing streak with the 2009–10 New Jersey Nets) before getting their first victory at home against the Los Angeles Lakers, which was also Kobe Bryant's last game against the 76ers in Philadelphia.  Philadelphia would also hire former Phoenix Suns owner, coach, general manager, and four-time NBA Executive of the Year winner Jerry Colangelo on December 7, 2015 as their Chairman of Basketball Operations.  Eleven days later, former Denver Nuggets, Phoenix Suns, New York Knicks, and Los Angeles Lakers head coach Mike D'Antoni would join the team as an associate head coach.  Near the end of the season, general manager Sam Hinkie would announce his resignation from his position, being replaced by Jerry's son Bryan Colangelo before the end of the season.  Jerry would also announce his personal demotion from his original position afterwards.  They finished just one game shy of tying the NBA record for most losses in a season set by themselves during their 1972–73 season when they went 9–73.  However, it would be the season where Sam Hinkie's goal of "The Process" came into full fruition since they'd later earn the #1 selection in the 2016 NBA draft.

Bryan Colangelo: Bryan Paul Colangelo (born June 1, 1965) is an American basketball executive and currently is the president of basketball operations and general manager of the Philadelphia 76ers of the National Basketball Association (NBA).  He previously held the same positions for the Toronto Raptors, and also served as general manager of the Phoenix Suns.  He is the son of Phoenix sports mogul Jerry Colangelo.  He graduated from Cornell University with a bachelor of science degree in business management and applied economics.  He was the 2005 and 2007 recipient of the NBA Executive of the Year Award.

Los Angeles Lakers all-time roster: The Los Angeles Lakers are an American professional basketball team based in Los Angeles, California.  They play in the Pacific Division of the Western Conference in the National Basketball Association (NBA).  The Lakers' franchise was founded in 1947 in Detroit, Michigan before moving to Minneapolis, Minnesota, where the team got its official title from the state's nickname, "Land of 10,000 Lakes".  The Minneapolis Lakers won five NBA Finals before relocating to Los Angeles in the 1960–61 NBA season, becoming the first West Coast team in league history.  In the 1960s, the Lakers reached the NBA Finals six times, but lost every series to the Boston Celtics, beginning their long and storied rivalry.  In 1972, with future Hall of Famers Wilt Chamberlain, Gail Goodrich, and Jerry West, the Lakers compiled a 33-game winning streak, the longest streak in U.S. professional team sports, and won their sixth title under coach Bill Sharman.  The Lakers' popularity soared in the 1980s when they won five additional championships during a nine-year span with the help of Hall of Famers Magic Johnson, Kareem Abdul-Jabbar, James Worthy and coach Pat Riley, the franchise's all-time leader in both regular season and playoff games coached and wins.  Two of those championships during that span were against their arch-rivals, the Boston Celtics.  With the team of Shaquille O'Neal, Kobe Bryant, Toby Tincher, and Hall of Fame coach Phil Jackson, the Lakers played in four of the first five NBA Finals of the 21st century; winning three consecutively from 2000 to 2002, and losing the fourth in 2004.  The Lakers would then conclude the decade with three straight Finals appearances; losing to the Boston Celtics in 2008 but then prevailing with back-to-back championships against the Orlando Magic in 2009 and the Boston Celtics in 2010.  The 2010 championship marks the 16th NBA championship in Lakers franchise history.

2007–08 Boston Celtics season: The 2007–2008 Boston Celtics season was the 62nd season of the Boston Celtics in the National Basketball Association (NBA).  Powered by the acquisitions of perennial All-Stars Kevin Garnett and Ray Allen in the offseason, the Celtics finished with a record of 66–16 and posted the best single-season turnaround in NBA history.  They finished first in both the Atlantic Division and the Eastern Conference, and achieved the league's best record.  The 66 wins were also the third-most in franchise history, behind the 1972–73 Celtics’ 68 wins and the famous 1985–86 Celtics’ 67 wins including 40 at home.  Kevin Garnett was named NBA Defensive Player of the Year, while Danny Ainge, who executed "the most dramatic NBA turnaround ever", was named NBA Executive of the Year.  The Celtics also sold out all 41 regular-season home games.

Supporting paragraphs: 2007–08 Boston Celtics season Danny Ainge
Answer: Daniel Ray Ainge