Please answer the following question: Information:  - The National Hockey League (NHL) is a professional ice hockey league currently composed of 31 member clubs. Of the 30 clubs currently playing, 23 are in the United States and 7 in Canada. Headquartered in New York City, the NHL is considered to be the premier professional ice hockey league in the world, and one of the major professional sports leagues in the United States and Canada. The Stanley Cup, the oldest professional sports trophy in North America, is awarded annually to the league playoff champion at the end of each season.  - William Walton `` Bill '' Sharman ( May 25 , 1926 -- October 25 , 2013 ) was an American professional basketball player and coach . He is mostly known for his time with the Boston Celtics in the 1950s , partnering with Bob Cousy in what some consider the greatest backcourt duo of all time . As a coach , Sharman won titles in the ABL , ABA , and NBA , and is credited with introducing the morning shootaround . He was a 10 - time NBA Champion ( having won four titles as a player with the Celtics , one as head coach of the Los Angeles Lakers , and five as a Lakers executive ) , and a 12 - time World Champion in basketball overall counting his ABL and ABA titles . Sharman is also a two - time Naismith Memorial Basketball Hall of Fame inductee , having been being inducted in 1976 as a player , and in 2004 as a coach . Only John Wooden , Lenny Wilkens and Tommy Heinsohn share this double honor .  - The TD Garden (previously the Shawmut Center, the FleetCenter, and the TD Banknorth Garden; nicknamed the Boston Garden and The Garden) is a multi-purpose arena in Boston. It is named after its sponsor, TD Bank, a subsidiary of Canada's Toronto-Dominion Bank.  - Robert Joseph "Bob" Cousy (born August 9, 1928) is an American retired professional basketball player and member of the Naismith Memorial Basketball Hall of Fame. Cousy played point guard with the Boston Celtics from 1950 to 1963 and briefly with the Cincinnati Royals in the 196970 season. Making his high school varsity squad as a junior, he went on to earn a scholarship to the College of the Holy Cross, where he led the Crusaders to berths in the 1948 NCAA Tournament and 1950 NCAA Tournament and was named an NCAA All-American for 3 seasons.   - The Boston Celtics are an American professional basketball team based in Boston, Massachusetts. The Celtics compete in the National Basketball Association (NBA) as a member club of the league's Eastern Conference Atlantic Division. Founded in 1946 and one of eight NBA teams (out of 23 total teams) to survive the league's first decade, the team is owned by Boston Basketball Partners LLC. The Celtics play their home games at the TD Garden, which they share with the National Hockey League (NHL)'s Boston Bruins. The franchise's 17 championships are the most of any NBA franchise, and account for 24.3 percent of all NBA championships since the league's founding in 1946. As a percentage of championships won, the Celtics are the most successful franchise to date in the major four traditional North American professional sports leagues.  - The point guard (PG), also called the one or point, is one of the five positions in a regulation basketball game. A point guard has perhaps the most specialized role of any position. They are expected to run the team's offense by controlling the ball and making sure that it gets to the right players at the right time. Above all, the point guard must totally understand and accept their coach's game plan; in this way, the position can be compared to a quarterback in American football or a playmaker in association football (soccer).  - Basketball is a sport that is played by two teams of five players on a rectangular court. The objective is to shoot a ball through a hoop in diameter and mounted at a height of to backboards at each end of the court. The game was invented in 1891 by Dr. James Naismith, who would be the first basketball coach of the Kansas Jayhawks, one of the most successful programs in the game's history.     What object entity has the relation of 'position played on team / speciality' with the subject 'bill sharman'?   Choices: - center  - end  - playmaker  - point guard  - quarterback
A:
point guard