Question: What county contains the Illinois city that shares a name with the work location of Stephen Harper?

full_context: Document 1: Geography of Illinois: Illinois is in the midwestern United States. Surrounding states are Wisconsin to the north, Iowa and Missouri to the west, Kentucky to the south, and Indiana to the east. Illinois also borders Michigan, but only via a northeastern water boundary in Lake Michigan. Nearly the entire western boundary is the Mississippi River, except for a few areas where the river has changed course. Illinois' southeastern and southern boundary is along the Wabash River and the Ohio River. Whereas, its northern boundary and much of its eastern boundary are straight survey (longitudinal and latitudinal) lines. Illinois has a maximum north - south distance of 390 miles (630 km) and 210 miles (340 km) east - west. Its total area is 57,918 square miles (150,010 km).
Document 2: André Ouellet: With the return to power of the Liberals after the 1993 election, Ouellet was appointed Minister of Foreign Affairs by the new prime minister, Jean Chrétien. Despite his experience, Ouellet was not popular in Quebec, and the lasting legacy of the Charlottetown Accord hurt him. After the close result of the 1995 Quebec referendum, Chrétien wanted to present a new face of his government in Quebec. In 1996, Chrétien appointed Ouellet to head the Canada Post Corporation. Ouellet's seat in the House of Commons of Canada was taken by Pierre Pettigrew in a by-election later that year.
Document 3: Joyce Fairbairn: Fairbairn worked as a journalist in the Parliamentary Press Gallery in Ottawa before being hired as a legislative assistant to Prime Minister Pierre Trudeau in 1970. In 1981, she became Communications Coordinator in the Prime Minister's Office. On June 29, 1984, just prior to leaving office, Trudeau recommended her for appointment as a Liberal senator for Alberta, her home province.
Document 4: Henry Albert Harper: In Ottawa, Harper shared an apartment with Mackenzie King, who was then leading the effort to establish the new Department of Labour under the government of Wilfrid Laurier. In 1900 Harper resigned from the Herald, to work for Mackenzie King as the assistant editor of the "Labour Gazette", the Department's main publication.
Document 5: Kevin S. MacLeod: Born in North Sydney, Nova Scotia, MacLeod studied at Boston University and Carleton University, where he received both his bachelor's degree in history and political science and a master's degree in international affairs, before moving on to the University of Burgundy in Dijon, France. After his return from there, MacLeod served for 10 years as an administrative assistant in the House of Commons of Canada, subsequently acting as a chief of staff for one of the then ministers of the Crown before being employed by the Department of Canadian Heritage for 22 years. Among his accomplishments in that office, MacLeod was appointed as the Chief of Protocol and then authored "A Crown of Maples/la couronne canadienne"an educational book on the Canadian monarchy, published by the heritage department.
Document 6: Oklahoma: Two inland ports on rivers serve Oklahoma: the Port of Muskogee and the Tulsa Port of Catoosa. The only port handling international cargo in the state, the Tulsa Port of Catoosa is the most inland ocean-going port in the nation and ships over two million tons of cargo each year. Both ports are located on the McClellan-Kerr Arkansas River Navigation System, which connects barge traffic from Tulsa and Muskogee to the Mississippi River via the Verdigris and Arkansas rivers, contributing to one of the busiest waterways in the world.
Document 7: Ottawa, Kansas: Ottawa is a city in, and the county seat of, Franklin County, Kansas, United States. It is located on both banks of the Marais des Cygnes River near the center of Franklin County. As of the 2010 census, the city population was 12,649.
Document 8: Ottawa: Ottawa (/ ˈɒtəwə / (listen), / - wɑː /; French pronunciation: ​ (ɔtawa)) is the capital city of Canada. It stands on the south bank of the Ottawa River in the eastern portion of southern Ontario. Ottawa borders Gatineau, Quebec; the two form the core of the Ottawa -- Gatineau census metropolitan area (CMA) and the National Capital Region (NCR). As of 2016, Ottawa had a city population of 934,243 and a metropolitan population of 1,323,783 making it the fourth - largest city and the fifth - largest CMA in Canada.
Document 9: London Labour and the London Poor: London Labour and the London Poor is a work of Victorian journalism by Henry Mayhew. In the 1840s he observed, documented, and described the state of working people in London for a series of articles in a newspaper, the "Morning Chronicle", that were later compiled into book form.
Document 10: Rock River (Mississippi River tributary): The river begins with three separate branches which flow into the Horicon Marsh. The northermost branch, the West Branch, begins just to the west of the village of Brandon in Fond du Lac County, Wisconsin and flows east and then south to Horicon Marsh. The South Branch rises north of Fox Lake in Dodge County and flows east through Waupun to the marsh. The East Branch rises southeast of Allenton in Washington County just west of the Niagara Escarpment, and flows north and west through Theresa to the marsh. Leaving the marsh, it meanders southward to the Illinois border ending about 300 miles later at the Mississippi River at the Quad Cities in Illinois and Iowa. During its course it passes through Watertown, collects the Crawfish River in Jefferson, and receives the Bark River at Fort Atkinson. In northern Rock County it receives the Yahara River, and flows southward through Janesville and Beloit into northern Illinois, where it receives the Pecatonica River 5 miles (8 km) south of the state line.
Document 11: Shippingsport Bridge: Shippingsport Bridge has been the name of three similarly-located bridges over the Illinois River in LaSalle Township, LaSalle County, Illinois: an 1872 swing span bridge, a 1929 vertical-lift bridge nearby, and a 2003 bridge in the same location as the 1929 bridge. The third bridge still exists and carries Illinois Route 351 (IL 351).
Document 12: Arlington, Illinois: Arlington is a village in Bureau County, Illinois, United States. The population was 193 at the 2010 census. It is part of the Ottawa–Streator Micropolitan Statistical Area, located east of the Quad Cities, north of Peoria and Galesburg, west of LaSalle and Peru, and southwest of Rockford and Chicago.
Document 13: Richard Labonté: Originally from Edmonton, Alberta, Labonté studied English and political science at Carleton University in Ottawa, where he was an editor for "The Charlatan". Following school he joined the "Ottawa Citizen" in 1972 as an editor, later writing film and book reviews, and was a contributor to "The Body Politic". In 1980, he contributed to an "Ottawa Citizen" series on gay life in Ottawa, becoming one of the first Canadian journalists ever to come out in the pages of a mainstream newspaper.
Document 14: Canada House: The building which would later become known as Canada House was built between 1824 and 1827 to designs by Sir Robert Smirke, the architect of the British Museum. It was originally two buildings used by the Union Club and the Royal College of Physicians. Under the leadership of High Commissioner Peter Charles Larkin the Canadian government acquired the Union Club in 1923 for the sum of £223,000. It was Larkin's intention to centralise the work of 200 Canadian employees scattered among offices in Victoria Street in one central building. Renovations cost $1.3 million CDN and were supervised by the architect Septimus Warwick, who moved the main entrance from Trafalgar Square to Cockspur Street. The designers imported Canadian furniture, carpets and maple and birch flooring. The exterior was reclad in Portland stone to match the facade of the Royal College of Physicians. The building was officially opened on 29 June 1925 by King George V.
Document 15: Ottawa, Illinois: Ottawa is a city located at the confluence of the navigable Illinois River and Fox River in LaSalle County, Illinois, United States. The Illinois River is a conduit for river barges and connects Lake Michigan at Chicago, to the Mississippi River, and North America's 25,000 mile river system. The population estimate was 18,562 as of 2013. It is the county seat of LaSalle County and it is part of the Ottawa-Peru, IL Micropolitan Statistical Area.
ground_truth: LaSalle County
sub_queries: Stephen Harper >> work location Answer: Ottawa
Ottawa >> located in the administrative territorial entity Answer: LaSalle County