Question: What mid-fifties Canadian golf event on the PGA Tour was sponsored by the largest brewer in Canada?

full_context: Document 1: 1953 Canada Cup: The 1953 Canada Cup took place June 2–3 at the Beaconsfield Golf Club in Montreal, Quebec, Canada. It was the first Canada Cup event, which became the World Cup in 1967. The tournament was a 36-hole stroke play team event with 7 teams. Each team consisted of two players from a country, except that South African Bobby Locke and Englishman Harry Weetman played as a team. The combined score of each team determined the team results. Play was in pairs, two players from different countries. The Argentine team of Antonio Cerdá and Roberto De Vicenzo won by ten strokes over the Canadian team of Bill Kerr and Stan Leonard. Antonio Cerdá had the lowest individual score. The tournament was sponsored by John Jay Hopkins.
Document 2: List of breweries in Australia: Beer production in Australia has traditionally been dominated by regional producers. Since the 1980s there has been a steady stream of takeovers and amalgamations, and now the two major producers (who were once Australian owned) are Carlton & United Breweries (CUB) and Lion. In December 2011, CUB became a subsidiary of British multinational SABMiller (the then world second largest international brewing company) and in October 2016 CUB became 100% owned by Anheuser-Busch InBev (AB InBev) the world's largest brewing company based in Belgium. Since October 2009, Lion has been a subsidiary of Japanese brewer, Kirin Holdings Company Limited a brewing company established in 1885. The largest remaining Australian owned brewer is Coopers Brewery with a market share of about 4% of total beer volume sales in Australia.
Document 3: 2017 PGA Tour Canada: The 2017 PGA Tour Canada season ran from June 1 to September 17 and consisted of 12 official golf tournaments. This was the 48th season of PGA Tour Canada (previously known as the Canadian Professional Golf Tour), and the fifth under the "PGA Tour Canada" name. It was also the third under the Mackenzie Tour – PGA Tour Canada name after Mackenzie Investments signed a six-year sponsorship deal.
Document 4: Moosehead Breweries: Moosehead Breweries Limited is Canada's oldest independent brewery, located in Saint John, New Brunswick. The brewery was founded in 1867 and is still privately owned and operated by the Oland family. Now in the sixth generation of family ownership, this is a privately held company. The Moosehead line of beer is extensive, and includes American beers brewed under license for four major U.S. companies. Moosehead beer is sold throughout Canada, in many locations in the United States and in 15 countries around the world.
Document 5: Open de Portugal: The Open de Portugal, previously the Portuguese Open is an annual tournament on men's golf's European Tour. It was first played in 1953, and was part of the European Tour's schedule beginning in 1973. Up until 2010, it was played in late March or early April each year, and was one of the first European Tour events of the season to be played in Europe, after the season spent the northern winter in Asia, Australasia and South Africa.
Document 6: Latrobe Brewing Company: Latrobe Brewing Company in Latrobe, Pennsylvania, founded in 1839, was one of the largest breweries in the United States and the maker of "Rolling Rock" beer (famous for its small green bottles). It was purchased by Labatt Brewing Company in 1987, which in turn was purchased in 1995 by the Belgian brewing conglomerate corporation Interbrew, which merged later into InBev in 2004.
Document 7: Carling brewery: Carling brewery was founded in London, Ontario, Canada in 1818. In 1952 Carling lager was first sold in the United Kingdom; in the early 1980s it became the UK's most popular beer brand (by volume sold). The company changed hands numerous times; it was acquired by Canadian Breweries Limited, which was eventually renamed Carling O'Keefe, which merged with Molson, which then merged with Coors to form Molson Coors Brewing Company. In South Africa the Carling brands are distributed by SABMiller.
Document 8: Labatt Open: The Labatt Open was a golf event on the PGA Tour that was played in Canada in the mid-1950s. It was sponsored by the Labatt Brewing Company. It was played at several different courses.
Document 9: Kananaskis Country Golf Course: Kananaskis Country Golf Course is a publicly accessible world-renowned 36-hole golf course situated in Kananaskis Country, a park system west of Calgary, Alberta, Canada in the foothills and front ranges of the Canadian Rockies which opened in 1983 at a cost of $25.5 million. The golf course near Kananaskis Village, Alberta designed by the golf course architect Robert Trent Jones, consists of two 18-hole golf layouts, played beneath Mt.Lorette and Mt.Kidd, after which the courses are respectively named. "Score Golf Magazine" has consistently ranked this facility as a top 100 course in Canada. Kananaskis Country Golf Course is part of the collection of seven golf courses and resorts in Alberta, the Canadian Rockies Golf – "the most storied and recognized group of golf courses in Canada." About sixty thousand rounds of golf were played there annually with eighty-five percent played by Albertans. The golf course includes the pro-shop, club house, tournament centre and other golf course buildings which were valued at $15 million in 2015. During the June 2013 Alberta floods, Kananaskis Country "sustained the most extensive damage in its 36-year history." The Alberta government committed $18 million to rebuild the Course and to protect it from future flood damage.
Document 10: Labatt Brewing Company: Labatt Brewing Company Ltd. (French: "Brasseries Labatt du Canada Ltée" ) is a Belgian-owned Canadian beer company founded by John Kinder Labatt in 1847 in London, Ontario. Labatt is the largest brewer in Canada.
Document 11: PGA Tour: The PGA Tour (stylized in all capital letters as PGA TOUR by its officials) is the organizer of the main professional golf tours played primarily by men in the United States and North America. It organizes most of the events on the flagship annual series of tournaments also known as the PGA Tour, as well as PGA Tour Champions (for golfers age 50 and older) and the Web.com Tour (for professional players who have not yet qualified to play in the PGA Tour), as well as PGA Tour Canada, PGA Tour Latinoamérica, and PGA Tour China. It is headquartered in Ponte Vedra Beach, Florida, a suburb of Jacksonville.
Document 12: Molson Canadian: Molson Canadian is a brand of 5% abv pale lager (4% in Ireland) brewed by Molson, the Canadian division of Molson Coors Brewing Company. The beer was introduced in 1959.
Document 13: Flor de Caña Open: Flor de Caña Open is a golf tournament on the PGA Tour Latinoamérica that was first played in 2016. The tournament is sponsored by the Nicaraguan rum brand Flor de Caña and became the first professional golf tournament on the PGA Tour Latinoamérica to be played in Nicaragua. The inaugural tournament was won by Argentine Augusto Núñez.
Document 14: Oland Brewery: Oland Brewery is a brewing company in Halifax, Nova Scotia, Canada, and a unit of Labatt Brewing Company, itself a unit of InBev.
Document 15: Beer in Canada: Beer in Canada was introduced by European settlers in the seventeenth century. The first commercial brewery was La Brasseries due Roy [sic] started by New France Intendant Jean Talon, in Québec City in 1668. Many commercial brewers thrived until Prohibition in Canada. The provincial and federal governments' attempt to eliminate "intoxicating" beverages led to the closing of nearly three quarters of breweries between 1878 and 1928. It was only in the second half of the twentieth century that a significant number of new breweries opened up. The Canadian Beer industry now plays an important role in Canadian identity, though globalization of the brewing industry has seen the major players in Canada acquired by, or merged with, foreign companies, notably its three largest beer producers, Labatt, Molson and Sleeman. The result is that Moosehead, with an estimated 3.8 percent share of the domestic market in 2016, has become the largest fully Canadian-owned brewer.
ground_truth: Labatt Brewing Company