Question: Who is the chairman of the third most valuable franchise in NHL and owns a 25% stake in the Maple Leaf Sports & Entertainment through his holding company Kilmer Sports Inc?
Context: Maple Leaf Square is a multi-use complex and public square located in Toronto, Ontario, Canada.  It is located to the west of the Air Canada Centre in Downtown Toronto in the former Railway Lands.  The $500 million development was jointly developed by Cadillac Fairview, Lanterra and Maple Leaf Sports & Entertainment (MLSE), who owns the nearby Air Canada Centre.  The complex has 1800000 sqft of usable space covering 2.1 acre on one city block. Michael Friisdahl is the President and Chief Executive Officer of Maple Leaf Sports & Entertainment, a sports and entertainment company.  Friisdahl was appointed in October 2015, and is responsible for overseeing MLSE's sports properties which includes ownership of the Toronto Maple Leafs (National Hockey League), Toronto Raptors (National Basketball Association), Toronto FC (Major League Soccer), Toronto Marlies (American Hockey League), Raptors 905 (NBA Development League) and Toronto FC II (United Soccer League).  It also owns and operates Air Canada Centre, a multi-purpose indoor sporting arena in Toronto that has hosted more than 36 million fans over 2,500 events since its opening in 1999, and has invested in five other Toronto’s sports facilities — Ricoh Coliseum, home of the Marlies; BMO Field, home of Toronto FC; Lamport Stadium; the MasterCard Centre for Hockey Excellence, the practice facility for the Maple Leafs and Marlies and the BioSteel Centre, the practice facility of the Raptors.  MLSE operates and manages events at Ricoh Coliseum, BMO Field and BioSteel Centre. The Toronto St. Patricks were a professional men's ice hockey team which began playing in the National Hockey League (NHL) in 1919.  The Toronto NHL franchise (league membership) had previously been held by the Arena Company (and the team called the "Arenas"), but despite winning the Stanley Cup the team was bankrupt and pulled out of the league after just two seasons.  The rights to the Toronto franchise was purchased by a group of investors with links to an amateur club called the "St. Patricks".  The new owners renamed the NHL franchise after the amateur club, and as the St. Patricks the team won the Stanley Cup in 1922.  J.P. Bickell invested in the St. Patricks in 1924 as a favor to Charlie Querrie.  In 1927, Charlie Querrie and other investors wanted out, J.P. Bickell made arrangements for other Toronto investors and initially hired Mike Rodden the Referee and sports writer to run the hockey operations, which didn't work out.  He then hired Conn Smythe as the Managing Partner.  The team was then renamed the Toronto Maple Leafs for a number of reasons, two of which are the Maple Leaf was an unofficial Canadian national symbol and secondly it was the name of the Toronto Maple Leaf Baseball Club 1896-1967.  They played from Maple Leaf Stadium since 1926. The Ontario Raiders were a member of the National Lacrosse League during the 1998 NLL season.  The franchise was founded as an expansion team in Hamilton, Ontario, and played their home games at Copps Coliseum.  Former Buffalo Bandits coach Les Bartley was hired to coach the new team, and he lured former Bandit Jim Veltman to join him, becoming the Raiders' captain.  The team finished a respectable 6-6 in their inaugural season, but missed the playoffs on a tie-breaker.  Following the season, losses of $250,000 forced owner Chris Fritz to look for partners.  Maple Leaf Sports & Entertainment considered purchasing the team, but ultimately a group which included Bill Watters, the then Assistant General Manager of the Toronto Maple Leafs, Paul Beeston, former president of the Toronto Blue Jays, Tie Domi, player for the Maple Leafs, and Bobby Orr, former NHL player, bought it for $250,000 and promptly relocated the team to Toronto's Maple Leaf Gardens where they rebranded it the Toronto Rock. The Toronto Maple Leafs (officially the Toronto Maple Leaf Hockey Club) are a professional ice hockey team based in Toronto, Ontario.  They are members of the Atlantic Division of the Eastern Conference of the National Hockey League (NHL).  The club is owned by Maple Leaf Sports & Entertainment, Ltd. and are represented by Chairman Larry Tanenbaum.  With an estimated worth of US $1.1 billion in 2016 according to "Forbes", the Leafs are the third most valuable franchise in the NHL, after the Montreal Canadiens and the New York Rangers.  The team's broadcasting rights are split between BCE Inc. and Rogers Communication.  For their first 14 seasons, the club played their home games at the Mutual Street Arena, before moving to Maple Leaf Gardens in 1931.  The club moved to their present home, the Air Canada Centre in February 1999. Timothy J. Leiweke (born April 21, 1957) is an American sports executive who is the chief executive office of Oak View Group.  Leiweke was the former president and CEO of Maple Leaf Sports & Entertainment (MLSE) and former President and CEO of Anschutz Entertainment Group (AEG).  Leiweke held roughly a 4% stake in AEG as of 2012, and is well known for his relationship with notoriously reclusive AEG founder and Denver-based billionaire Philip Anschutz, whom he has known since the early 1990s.  Since November 2015, Leiweke has served as the CEO of the Oak View Group, "a global advisory, development and investment company for the sports and live entertainment industries". Lawrence M. Tanenbaum {'1': ", '2': ", '3': ", '4': "} (born 1945) is a Canadian businessman and chairman of Maple Leaf Sports & Entertainment (MLSE).  He owns a 25% stake in MLSE through his holding company Kilmer Sports Inc. The Maple Leaf was a passenger train operated by the Grand Trunk Western Railroad ("Grand Trunk") between Chicago, Illinois and Toronto, Ontario.  It operated from 1927 to 1971.  The train took its name from the maple leaf, the national symbol of Canada.  The "Maple Leaf" was one of many trains discontinued when Amtrak began operations in 1971, and is unrelated to the "Maple Leaf" which Amtrak now operates between Toronto and New York City. Maple leaf cream cookies (also called "maple leaf creme cookies", "maple leaf cookies", "maple creme cookies", "maple leaf cremes", and "maple cremes") are a Canadian sandwich cookie. Theodore Samuel "Teeder" Kennedy (December 12, 1925 – August 14, 2009) was a professional ice hockey centre who played his entire career with the Toronto Maple Leafs from 1943 to 1957 and was captain for eight seasons.  Along with Turk Broda, he was the first player in NHL history to win five Stanley Cups, and he was the last Maple Leaf to win the Hart Trophy for most valuable player.  He was an essential contributor to the Maple Leafs becoming what many consider as the National Hockey League's first dynasty.  He was inducted into the Hockey Hall of Fame in 1966.  He has been called the quintessential Maple Leaf and by some the greatest player in the team's history.  On January 1, 2017, in a ceremony prior to the Centennial Classic, Kennedy was part of the first group of players to be named one of the '100 Greatest NHL Players' in history.
Answer: Larry Tanenbaum