Question: What is the name of the large city in the Canadian province of Saskatchewan, where J.D. McAskill served as mayor? 

Context paragraphs:
University of Saskatchewan: The University of Saskatchewan (U of S) is a Canadian public research university, founded in 1907, and located on the east side of the South Saskatchewan River in Saskatoon, Saskatchewan, Canada.  An "Act to establish and incorporate a University for the Province of Saskatchewan" was passed by the provincial legislature in 1907.  It established the provincial university on April 3, 1907 "for the purpose of providing facilities for higher education in all its branches and enabling all persons without regard to race, creed or religion to take the fullest advantage".  The University of Saskatchewan is the largest education institution in the Canadian province of Saskatchewan.  The University of Saskatchewan is one of Canada’s top research universities (based on the number of Canada Research Chairs) and is a member of the U15 Group of Canadian Research Universities (the 15 most research-intensive universities in Canada).

Rugby Chapel: Rugby Chapel is a municipal historic site which is part of the University of Saskatchewan (U of S).  The U of S is the largest education institution in the Canadian province of Saskatchewan.  The University of Saskatchewan location next to the South Saskatchewan River was across from the city centre of Saskatoon.  In 1879, the Rt.  Rev. John McLean started a schooling system in Prince Albert which was renamed the University of Saskatchewan in 1883.  In 1909, when the University of Saskatchewan was established in Saskatoon, Emmanuel College moved its college buildings to Saskatoon.

J. D. McAskill: John Donald MacAskill (25 November 1907 – July 25, 1994) was an educator, politician and municipal official in Saskatchewan, Canada.  He served as mayor of Saskatoon, Saskatchewan from 1954 to 1958.

Sheho, Saskatchewan: Sheho, Saskatchewan is a village in the Canadian province of Saskatchewan.  Sheho is located on Saskatchewan Highway 16, the Yellowhead in south east Saskatchewan between Foam Lake and the city of Yorkton.  Sheho Lake post office first opened in 1891 at the legal land description of Sec.28, Twp.30, R.9, W2 before moving slightly and changing name to Sheho.  Sheho is located east of Foam Lake, Saskatchewan and west of Yorkton, Saskatchewan

Premier of Saskatchewan: The Premier of Saskatchewan is the first minister for the Canadian province of Saskatchewan.  They are the province's head of government and "de facto" chief executive.  The current Premier of Saskatchewan is Brad Wall, who was sworn in as premier on November 21, 2007 after winning the provincial election.  The first Premier of Saskatchewan was Thomas Walter Scott, who served from 1905–1916.  Since Saskatchewan joined Confederation as a province in 1905, 14 individuals have served as premier.

Saskatchewan Highway 39: Highway 39 is a provincial paved undivided highway located in the southern portion of the Canadian province of Saskatchewan connecting North Portal and Moose Jaw in the north.  This is a primary Saskatchewan highway maintained by the provincial and national governments providing a major trucking and tourism route between the United States via Portal, Burke County, North Dakota, U.S.A. and North Portal, Saskatchewan.  On July 3, 2000, Highways and Transportation Minister Maynard Sonntag officiated at the ribbon cutting ceremony opening the new duty-free shop and the twinned highway at Saskatchewan's busiest border crossing.  Highway 39 is one of Canada's busiest highways, facilitating transport for $6 billion in trade goods via approximately 100,000 trucks over the year.  The entire length of highway 39 is paved.  The CanAm Highway comprises Saskatchewan Highways Hwy 35, Hwy 39, Hwy 6, Hwy 3, as well as Hwy 2.  44.3 mi of Saskatchewan Highway 39 contribute to the CanAm Highway between Weyburn and Corinne.  Highway 39 is divided or twinned in two areas at North Portal as well as north of Weyburn for 1.7 km .  The junction of Hwy 39 with the Trans–Canada divided four-lane highway is done via a "Parclo" or partial cloverleaf interchange.

Fielding, Saskatchewan: Fielding, Saskatchewan is an unincorporated area in the rural municipality of Mayfield No. 406, Saskatchewan, in the Canadian province of Saskatchewan.  Fielding is located on Saskatchewan Highway 16, the Yellowhead in north western Saskatchewan.  Fielding post office first opened in 1905 at the legal land description of Sec.18, Twp.41, R.11, W3.  The population is smaller than a hamlet, and is counted within the Mayfield No. 406, Saskatchewan.  Fielding is located just south east of North Battleford, Saskatchewan.  Fielding is located within 11 km of Glenburn Regional Park and within 9 km of the Radisson Lake Game Preserve.

Ruddell, Saskatchewan: Ruddell, Saskatchewan is a village in the rural municipality of Mayfield No. 406, Saskatchewan, in the Canadian province of Saskatchewan.  Ruddell is located on Saskatchewan Highway 16, the Yellowhead in north western Saskatchewan.  Ruddell post office first opened in 1906 at the legal land description of Sec.7, Twp.42, R.13, W3 - .  Ruddell is located just southeast of North Battleford, Saskatchewan.

Saskatoon: Saskatoon ( ) is the largest city in the Canadian province of Saskatchewan.  Straddling a bend in the South Saskatchewan River and along the Trans-Canada Yellowhead Highway, it has served as the region's cultural and economic hub since it was founded in 1882 as a Temperance colony.  At its 2016 census population of 246,376, Saskatoon is the largest city in the province, while at a 2016 census population of 295,095, the Saskatoon census metropolitan area (CMA) is the 17th largest CMA in Canada.  The City of Saskatoon has estimated its population to be 271,000 as of July 2017, while Statistics Canada has estimated the CMA's population to have to be 315,200 as of 2016.

Insinger, Saskatchewan: Insinger, Saskatchewan is an unincorporated area in the rural municipality of Insinger No. 275, Saskatchewan, in the Canadian province of Saskatchewan.  Insinger is located on Saskatchewan Highway 16, the Yellowhead in south eastern Saskatchewan.  Lawrie post office first opened in 1898 at the legal land description of Sec.6, Twp.29, R.7, W2.  It changed names in 1907 to Insinger and moved to Sec.21, Twp.29, R.8, W2 .  The population is smaller than a hamlet, and is counted within the Insinger No. 275, Saskatchewan, however it is still listed as a village at Geonames.  Insinger is located between Yorkton and Foam Lake.  Insinger is located within 14 km of Whitesand Regional Park.

Supporting paragraphs: J. D. McAskill Saskatoon
Answer: Saskatoon