Question: Who was the coach of Karl-Anthony Towns Jr., a Dominican-American professional basketball player for the Minnesota Timberwolves of the National Basketball Association ?

full_context: Document 1: Oscar Wegner: Oscar Wegner is a tennis coach and pre-open-era tour player, author, and creator of Modern Tennis Methodology, a tennis-teaching system which he began developing in 1968. He is Founder and President of Oscar Wegner Enterprises, Inc. and Tennis Kids For Life, Inc. a non-profit corporation. Other projects he has created include The Modern Tennis Methodology Coaches Association, The Oscar Wegner Elite Training Program and The Oscar Wegner Modern Tennis College. He teaches publicly and privately throughout the United States and internationally, contributes to tennis publications and events, and publishes TennisTeacher.com. He is a USPTA Professional 1, the highest tested rating possible in that organization. Wegner became an American citizen in 2005. He currently resides and coaches in Clearwater, FL .
Document 2: Play Their Hearts Out: Play Their Hearts Out: A Coach, His Star Recruit, and the Youth Basketball Machine, by Pulitzer Prize winning author George Dohrmann, is an award-winning exposé of the underbelly of grassroots youth basketball in the AAU. The author follows the lives of the coach and players of an elite team, documenting the exploitation and manipulation of the children and their families by coaches seeking the best players, and the influence of shoe and sports gear companies seeking to use the sport to promote their products. Dohrmann is a senior writer with Sports Illustrated.
Document 3: Tyus Jones: Tyus Robert Jones (born May 10, 1996) is an American professional basketball player for the Minnesota Timberwolves of the National Basketball Association (NBA). He played college basketball for the Duke Blue Devils in his freshman season as part of the 2014–15 National Championship team. He was ranked among the top 10 players in the national high school class of 2014 by Rivals.com, Scout.com and ESPN. He was a Minnesota State High School League (MSHSL) Class 4A state champion, three-time Minnesota Associated Press Boys Basketball Player of the Year and three-time Minnesota Boys Basketball Gatorade Player of the Year for Apple Valley High School. He played in the 2014 McDonald's All-American Boys Game, 2014 Jordan Brand Classic and the 2014 Nike Hoop Summit. He won the skills competition at the 2014 McDonald's All-American Game and posted the only double-double in the 2014 Jordan Brand Classic.
Document 4: Michael Gervais: Dr. Michael Gervais (born 1971) is a sport psychologist and entrepreneur, best known for working with the NFL's Seattle Seahawks and being the high performance coach of Austrian skydiver Felix Baumgartner.
Document 5: DeMarcus Cousins: DeMarcus Amir Cousins (born August 13, 1990) is an American professional basketball player for the New Orleans Pelicans of the National Basketball Association (NBA). Nicknamed "Boogie", he played college basketball for the University of Kentucky, where he was an All-American in 2010. He left Kentucky after one season, and was selected with the fifth overall pick in the 2010 NBA draft by the Sacramento Kings. In his first season with the Kings, Cousins was named to the NBA All-Rookie First Team, and from 2015 to 2017, he was named an NBA All-Star. He is also a two-time gold medal winner as a member of the United States national team, winning his first in 2014 at the FIBA Basketball World Cup and his second in 2016 at the Rio Olympics.
Document 6: Greg Harden: Greg Harden is a life coach, motivational speaker and executive consultant who is best known for his work with 5-time Super Bowl champion quarterback Tom Brady, Heisman Trophy winner and Super Bowl MVP Desmond Howard, and 23-time Olympic gold medalist Michael Phelps. Brady, Howard and other athletes credit Harden with inspiring them to overcome obstacles and achieve success in their professional and personal lives. Harden has created a personal improvement program that is unique in sports. In 2014, he was profiled in a segment on 60 Minutes.
Document 7: Martin Clawson: Martin Clawson is the Head Strength and Conditioning Coach at the club. He is himself a former player with Bradford Northern and comes from a famous Rugby League family. He has a background in sports fitness and was formerly a masseur at the club before assuming his present role. He is a former body building competitor and his personality makes him the ideal person for his job at the Bulls. Martin was employed as a business consultant for corporate communications giants Wish Communications with Garry Schofield OBE and John Stankevitch but has since taken up the role of Strength and Conditioning Coach at Wakefield Trinity Wildcats in the Super League.
Document 8: Karl-Anthony Towns: Karl-Anthony Towns Jr. (born November 15, 1995) is a Dominican-American professional basketball player for the Minnesota Timberwolves of the National Basketball Association (NBA). He played college basketball for the University of Kentucky. Towns was named to the Dominican Republic national basketball team Olympic squad as a 16-year-old, although the Dominican Republic ultimately did not qualify for the 2012 Olympics. He was selected with the first overall pick in the 2015 NBA draft by the Minnesota Timberwolves, and went on to be named NBA Rookie of the Year for the 2015–16 season.
Document 9: Grudge Training Center: Grudge Training Center (GTC) was a mixed martial arts training center founded by coach Trevor Wittman in 2009. Originally located in Wheat Ridge, Colorado, GTC relocated to Arvada, Colorado in 2013. The gym was an affiliate of Jackson's Submission Fighting. To devote more attention to his sports equipment company ONX Sports, Wittman closed Grudge in November 2016, with Grudge trainer Jake Ramos opening the Genesis Training Center to assume most of Grudge's former personnel, membership and operations.
Document 10: Andrew Wiggins: Andrew Christian Wiggins (born February 23, 1995) is a Canadian professional basketball player for the Minnesota Timberwolves of the National Basketball Association (NBA). He played college basketball for the University of Kansas before being drafted with the first overall pick in the 2014 NBA draft by the Cleveland Cavaliers, making him just the second Canadian to be taken number one overall in the NBA draft. He went on to earn NBA Rookie of the Year honors for the 2014–15 season. Wiggins is also a member of the Canadian national team.
Document 11: Zacarías Ferreíra: Zacarías Ferreira is a Bachata artist from the Dominican Republic. He was born in the 1970s in the Dominican Republic. He is the uncle of professional basketball player Karl-Anthony Towns, who currently plays on the Minnesota Timberwolves, of the NBA.
Document 12: Graham Betchart: Graham Betchart (born April 30, 1978) is a sports psychology mental skills coach and current director of mental training for Lucid Performance. He is known for the concept "Play Present," which teaches that an athlete needs to stay focused on the task at hand and immediately move on to the next play despite results or outcomes. He is also noted for the "MVP" program (Mediate, Visualize, Positive affirmation), a sports psychology mental training tool, as well as "WIN" (What is Important Now), which asserts that a player can only control attitude, effort, and focus. Notable athletes Betchart has coached include Andrew Wiggins, Karl-Anthony Towns, and Ben Simmons, the first overall picks for the 2014, 2015, and 2016 NBA drafts, respectively.
Document 13: Anthony Davis (basketball): Anthony Marshon Davis Jr. (born March 11, 1993) is an American professional basketball player for the New Orleans Pelicans of the National Basketball Association (NBA). He plays the power forward and center positions. Davis was selected first overall in the 2012 NBA draft by New Orleans, is a four-time NBA All-Star, and has been named to two All-NBA First Teams. He also earned a gold medal playing with Team USA at the 2012 Summer Olympics.
Document 14: Carmelo Anthony: Carmelo Kyam Anthony (born May 29, 1984) is an American professional basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA). Anthony attended Towson Catholic High School and Oak Hill Academy before playing college basketball at Syracuse. In Anthony's freshman season, he led the Orangemen to their first and only National Championship and was named the NCAA Tournament's Most Outstanding Player. Anthony then entered the 2003 NBA draft where he was selected with the third overall pick by the Denver Nuggets.
Document 15: Coleman Griffith: Coleman Roberts Griffith (May 22, 1893 – February 1966) was an American sport psychologist. Born in Iowa, he is considered the founder of American sport psychology. Griffith studied at Greenville College until 1915, and then studied psychology at the University of Illinois. While at the University of Illinois, Griffith established what he claimed to be the first sports psychology laboratory in the United States. At this time Griffith worked closely with the University of Illinois football team, studying how factors such as psychomotor skills and personality variables related to performance and learning of athletic skills. Due to financial reasons, the Research in Athletics Laboratory eventually was closed, which led to Griffith becoming a sport psychologist with the Chicago Cubs baseball team. Throughout his time with the Chicago Cubs, Griffith examined the players and completed a series of reports for Philip K. Wrigley, the owner of the Chicago Cubs team, with the results eventually summarized in a large report. His ideas were met with resistance, but he helped the Cubs to be successful while there. Griffith ended his career in the department of education at the University of Illinois until his retirement in 1961. Some of Griffith's main contributions to the field of sports psychology came from his publications "The Psychology of Coaching" (1926) and "The Psychology of Athletics" (1928). These publications were written during Griffith’s time at the University of Illinois and covered topics such as how a coach must have knowledge in athletics, physiology, and psychology to be successful. Much of Griffith's research and publications have become the foundation for the widely growing field of sports psychology and many of his ideas are still used today.
ground_truth: Graham Betchart