question: What mid-fifties Canadian golf event on the PGA Tour was sponsored by the largest brewer in Canada?
answer: Labatt Brewing Company
context: Title: 2013 PGA Tour Canada
  Passage: The 2013 PGA Tour Canada season runs from June 6 to September 15 and consists of nine official golf tournaments.  This is the 44th season of PGA Tour Canada (previously known as the Canadian Professional Golf Tour), and the first under the "PGA Tour Canada" name.  On October 18, 2012, the Canadian Tour and the U.S. PGA Tour announced that they had reached an agreement by which the PGA Tour would take over the Canadian circuit.
  Title: Labatt Open
  Passage: 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.
  Title: Labatt Brewing Company
  Passage: 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.
  Title: Stan Leonard
  Passage: Stan Leonard (February 2, 1915 – December 15, 2005) was a Canadian professional golfer who played on the PGA Tour in the 1950s and 1960s.  Leonard won three PGA Tour events, eight Canadian PGA Championships, and 16 other events on the Canadian Tour.  He is a member of the Canadian Golf Hall of Fame.
citations: Labatt Brewing Company Labatt Open