Question: Wayne Gretzky's Edmonton Oilers' linemate Mark Messier is a Canadian former professional ice hockey center of the National Hockey League and former special assistant to the president and general manager of what team?

Context articles: Doug Messier
Keith Gretzky
Mike Barnett (ice hockey)
Wayne Gretzky Hockey
Mark Messier
35th National Hockey League All-Star Game
Joel Otto
Glen Sather
Joey Moss
Craig MacTavish

Douglas Herbert Messier (born September 5, 1936) is a Canadian former ice hockey player and coach.
 He played 487 games in the Western Hockey League, playing with the Seattle Totems, Edmonton Flyers, and Portland Buckaroos.
 He also played briefly in the American Hockey League for the Pittsburgh Hornets.
 After his retirement, he became a minor league hockey coach.
 Messier is the father of Paul Messier and Hockey Hall of Fame player Mark Messier.
Keith Edward Gretzky (born February 16, 1967) is the assistant general manager of the Edmonton Oilers.
 He is one of the brothers of ice hockey legend Wayne Gretzky.
 Keith was promoted to Director of Amateur Scouting for the Phoenix Coyotes on July 12, 2006, after serving the previous five seasons as an amateur scout for both the Quebec Major Junior Hockey League and Ontario Hockey League.
 He was drafted by the Buffalo Sabres of the NHL, and though he attended two training camps and played in several pre-season games, he never played a regular-season game for them.
 He is a former director of Amateur Scouting for the Boston Bruins.
Michael G. Barnett (born October 9, 1948 in Olds, Alberta) is a Canadian ice hockey executive currently serving as Senior Advisor to the President-General Manager of the New York Rangers.
 He is best known in the world of hockey as a former agent representing sports icon Wayne Gretzky for two decades.
 He was listed among the "100 Most Powerful People In Sports" by "The Sporting News" on six occasions from 1994 to 2000.
 During his 12 years as President of International Management Group's hockey division, Barnett represented a who's who of the National Hockey League.
 Barnett negotiated the playing and marketing contracts for Wayne Gretzky, Brett Hull, Jaromir Jagr, Sergei Fedorov, Paul Coffey, Joe Thornton, Mats Sundin, Lanny McDonald, Grant Fuhr, Marty McSorley, Alexander Mogilny, Owen Nolan, Daniel Sedin and Henrik Sedin and numerous others.
 Whatever the form of contract, Barnett's creativity was legendary.
 His ingenuity in finding language that challenged the NHL's Collective Bargaining Agreement, in finding products and companies for his clients that were groundbreaking in their launches, and his perpetual attention to the public relations of his clients, were all hallmark's of his career in athlete representation.
 Following his two-decades as one of the most highly regarded agents in all of sports, Barnett went on to become the General Manager of the Phoenix Coyotes in the National Hockey League.
Wayne Gretzky Hockey is an ice hockey-themed sports game developed by Bethesda Softworks, and first published in 1988.
 The game features the name and likeness of Canadian professional ice hockey centre Wayne Gretzky.
 Bethesda Softworks published "Wayne Gretzky Hockey" shortly after Peter Pocklington traded Gretzky from the Edmonton Oilers to the Los Angeles Kings on 9 August 1988.
Mark Douglas Messier {'1': ", '2': ", '3': ", '4': "} ( ; born January 18, 1961) is a Canadian former professional ice hockey center of the National Hockey League and former special assistant to the president and general manager of the New York Rangers.
 He played a quarter of a century in the NHL (1979–2004) with the Edmonton Oilers, New York Rangers, and Vancouver Canucks.
 He also played professionally with the World Hockey Association (WHA)'s Indianapolis Racers and Cincinnati Stingers.
 He was the last former WHA player to be active in professional hockey, and the last active player who had played in the NHL in the 1970s.
The 35th National Hockey League All-Star Game was held on February 8, 1983, at the Nassau Veterans Memorial Coliseum in Uniondale, New York, home to the New York Islanders.
 In the game, Edmonton Oilers' centre Wayne Gretzky set an All-Star Game record by scoring all of his four goals in the third period.
 Gretzky's four goal performance was instrumental in winning his first All-Star M.V.P. honor.
 Wayne Gretzky's Edmonton Oilers' linemate Mark Messier assisted on three of the four goals in the third period to set an All-Star Game record for most assists in a period.
Joel Stuart Otto (born October 29, 1961) is an American former professional ice hockey center in the National Hockey League (NHL) for the Calgary Flames and Philadelphia Flyers.
 An undrafted player, Otto signed with the Flames as a free agent in 1984 and played 11 seasons with the team.
 He was one of the top defensive centers in the league during his career and one of the NHL's best at faceoffs; Otto was a two-time finalist for the Frank J. Selke Trophy.
 He was known for his confrontations with Mark Messier as part of the Flames' rivalry with the Edmonton Oilers and was a member of Calgary's 1989 Stanley Cup championship winning team.
 He joined the Flyers in 1995, with whom he played three seasons.
Glen Cameron "Slats" Sather (born September 2, 1943) is the current president of the New York Rangers of the National Hockey League (NHL), a post he has held since 2000.
 He was also general manager until stepping down on July 1, 2015.
 He is known for coaching the Edmonton Oilers to four Stanley Cup victories during the 1980s.
 He played a key role in attracting the talented players, including Wayne Gretzky, who helped make the Oilers a hockey dynasty at that time.
 Gretzky, who became "the most dominant player in the history of the game," credits Sather, along with Walter Gretzky, his father, as his most important mentors.
 Outside of the NHL, Sather was instrumental in building Canadian national teams for the 1984 Canada Cup (tournament champions), the 1994 Ice Hockey World Championship (Gold Medal winners) and 1996 World Cup of Hockey (Finalists).
 Prior to coaching, Sather was a professional ice hockey left winger in the WHA and NHL, playing for several teams over a 10-year period.
 Sather was born in High River, Alberta but grew up in Wainwright, Alberta.
 Sather resides in Rye, New York during the season and Palm Springs, California in the off-season, but also has a home in Banff, Alberta.
 He was inducted into the Hockey Hall of Fame in 1997.
Joseph Neil "Joey" Moss (born September 25, 1963) is the locker room attendant for the Edmonton Oilers of the National Hockey League and the Edmonton Eskimos of the Canadian Football League.
 He is an Edmonton Oilers legend.
 Born with Down syndrome, Moss caught the eye of Oilers centre Wayne Gretzky in 1985, when Gretzky was dating Moss' sister, Vikki.
 Impressed with the dedication Moss brought to a job at an Edmonton bottle depot, Gretzky suggested to team general manager Glen Sather that the young man be given a tryout.
Craig MacTavish (born August 15, 1958) is a Canadian professional ice hockey executive and former player.
 He is the current Vice President of Hockey Operations for the Edmonton Oilers, and has also served as the team's head coach and general manager.
 He played centre for 17 seasons in the National Hockey League with the Boston Bruins, Edmonton Oilers, New York Rangers, Philadelphia Flyers and St. Louis Blues, winning the Stanley Cup four times (1987, 1988, 1990, 1994).
 MacTavish later coached the Oilers from 2000 to 2009 and also served as assistant coach with the Rangers and Oilers.
 He is notable as the last NHL player to not wear a helmet during games.