Question: Alexander Keith is the founder of the brewery that is located in what city?

Context paragraphs:
Keith's Chapel: Keith's Chapel also known as Mr Keith's Chapel and the May Fair Chapel, was a private chapel in Curzon Street, Mayfair, London, operated by the 18th century Church of England clergyman Alexander Keith.

Alexander Keith's Brewery: Founded in 1820, Alexander Keith's is a brewery in Halifax, Canada.  It is among the oldest commercial breweries in North America.  (The oldest surviving brewing enterprise in Canada was established by John Molson in Montreal in 1786 while the oldest in the US, Yuengling, originally called Eagle Brewing, was founded in 1829 in Pottsville, PA.)

Alexander Keith (politician): Alexander Keith (October 5, 1795 – December 14, 1873) was a Scottish born Canadian politician, Freemason and brewer.  He was mayor of the city of Halifax, Nova Scotia, a Conservative member of the provincial legislature, and the founder of the Alexander Keith's Nova Scotia Brewery.

Alexander Keith Marshall: Alexander Keith Marshall (February 11, 1808 – April 28, 1884) was a United States Representative from Kentucky.  He was born at Buck Pond, near Versailles, Kentucky.  He completed preparatory studies and settled in Nicholasville, Kentucky.  Studying medicine, he graduated from the medical department of the University of Pennsylvania in Philadelphia in 1844 and then engaged in the practice of medicine at Nicholasville, Kentucky.

Alexander Keith Johnston (1804–1871): Alexander Keith Johnston FRSE FRGS FGS FEGS LLD (28 December 18049 July 1871) was a Scottish geographer and cartographer.

Alexander Keith Johnston (1844–1879): Alexander Keith Johnston (November 11, 1844 in EdinburghJune 28, 1879 in Tanzania) was a Scottish explorer and geographer.

Kenneth Keith, Baron Keith of Castleacre: Kenneth Alexander Keith, Baron Keith of Castleacre (30 August 1916 – 1 September 2004) was a British businessman and banker.

Alexander Keith McClung: Alexander Keith McClung (14 June 1811 – 23 March 1855) briefly served as US chargé d'affaires to Bolivia in President Zachary Taylor's administration.  An "inveterate Southern duelist" nicknamed "The Black Knight of the South", he was also a poet.  James H. Street used him as the model for the character Keith Alexander in his novel "Tap Roots" (1942).

2009 Alexander Keith's Tankard: The 2009 Alexander Keith's Tankard (New Brunswick's men's provincial curling championship) was held February 11–15 at Thistle St. Andrews Curling Club in Saint John, New Brunswick.  The winning team will represent New Brunswick at the 2009 Tim Hortons Brier in Calgary.

Fugitive Rage: Fugitive Rage is a crime drama action film directed by Fred Olen Ray and starring Shauna O'Brien, Jay Richardson and Alexander Keith, credited as Wendy Schumacher.  The film was released straight to video in 1996.

Supporting paragraphs: Alexander Keith (politician) Alexander Keith's Brewery
Answer: Halifax