Question: Thamesville, Ontario is located between Chatham and which city with a population of 383,822 people and is at the confluence of the Thames River?

full_context: Document 1: Detroit River: The Detroit River flows for 24 nmi from Lake St. Clair to Lake Erie as a strait in the Great Lakes system and forms part of the border between Canada and the United States. The river divides the metropolitan areas of Detroit, Michigan and Windsor, Ontario - an area referred to as Detroit–Windsor. The two cities are connected by the Ambassador Bridge, the Detroit–Windsor Tunnel and the Michigan Central Railway Tunnel.
Document 2: Thamesville: Thamesville is a community in Chatham-Kent, Ontario, Canada. It is located at the junction of former provincial Highways 2 and 21, between Chatham and London. Its name comes from the Thames River that flows nearby and the suffix -ville.
Document 3: Detroit–Windsor: The Detroit–Windsor region is an international transborder agglomeration comprising the American city of Detroit, Michigan, the Canadian city of Windsor, Ontario, and the Detroit River between them. The Detroit–Windsor area acts as a critical commercial link straddling the Canada–United States border and has a total population of about 5,700,000. It is North America's largest cross-border conurbation.
Document 4: Avon River (Ontario): The Avon River is a river in Perth County, Ontario, Canada. The river was named after the River Avon in England when the town of Stratford was founded on its banks in 1832. The Avon River rises northeast of Stratford and flows southwest, entering the North Thames River near St. Marys. It was originally known as the Little Thames River.
Document 5: City Centre Towers: City Centre or London City Centre is a twin office tower complex in London, Ontario, Canada at 275 Dundas Street. Construction on the towers was finished in 1974. The South tower is 96 m tall, and is the second tallest building in the city and one of the tallest office buildings in Ontario outside Toronto. The North tower is 89 meters tall and is the third tallest office building in the city. The buildings are one of several twin tower complexes in London's central business district. The towers were the tallest buildings in Southwestern Ontario from 1974, to 1992 when One London Place was completed.
Document 6: Thames Gateway Bridge: The Thames Gateway Bridge was a proposed crossing over the River Thames in east London, England. It was first mooted in the 1970s but never came to fruition. In November 2008, Boris Johnson, the then Mayor of London, formally cancelled the entire £500 million scheme.
Document 7: London, Ontario: London is a city in Southwestern Ontario, Canada along the Quebec City–Windsor Corridor. The city has a population of 383,822 according to the 2016 Canadian census. London is at the confluence of the Thames River, approximately 200 kilometers from both Toronto, Ontario and Detroit, Michigan; and about 230 kilometers from Buffalo, New York. The City of London is a separated municipality, politically separate from Middlesex County, though it remains the county seat.
Document 8: Upper Thames River Conservation Authority: The Upper Thames River Conservation Authority is a body based in London, Ontario, Canada. It was created in 1947. It was responsible for the construction of the Fanshawe Dam, completed in the 1950s, to control flooding from the Thames River, which runs through London. During the last ice age, the site of London was the terminus of a large glacier. When the region warmed at the end of the ice age, the glacier melted and receded North, leaving behind a drainage ditch and features such as Sifton Bog. As such, the Thames is a watershed for most of Western Ontario, and is therefore highly susceptible to seasonal flooding. In 1937, such flooding had devastating consequences, destroying over 1,000 homes, and causing millions of dollars in damage.
Document 9: Medway Creek (Ontario): Medway Creek is a tributary of the Thames River in southwestern Ontario, Canada, draining into the North branch of the Thames at the University of Western Ontario.
Document 10: St. Marys, Ontario: St. Marys is a town in southwestern Ontario, Canada. It is located at the junction of Thames River and Trout Creek, southwest of Stratford, surrounded by the Township of Perth South and located in Perth County, Ontario. However, like Stratford, St. Marys operates under its own municipal government that is independent from the County's government. Nonetheless, the three entities "enjoy a large degree of collaboration and work together to growth the region as a leading location for industry and people". Census data published for Perth County by Statistics Canada includes St. Marys and most Perth County publications also do, at least in some sections of the document.
Document 11: Delaware, Ontario: Delaware is a community located about 10 km west of and outside of London, Ontario, Canada within Middlesex County. Delaware straddles the Thames River. Delaware is accessed by the old highway (Highway 2) linking London and Chatham and the freeway (Highway 402) linking Sarnia along with Port Huron and Toronto.
Document 12: River Thames: The River Thames ( ) is a river that flows through southern England, most notably through London. At 215 mi , it is the longest river entirely in England and the second longest in the United Kingdom, after the River Severn. It also flows through Oxford (where it is called Isis), Reading, Henley-on-Thames and Windsor. The lower reaches of the river are called the Tideway, derived from its long tidal reach up to Teddington Lock. It rises at Thames Head in Gloucestershire, and flows into the North Sea via the Thames Estuary. The Thames drains the whole of Greater London.
Document 13: Woodstock, Ontario: Woodstock is a city in Southwestern Ontario, Canada. The city has a population of 40,902 according to the 2016 Canadian census. Woodstock is the seat of Oxford County, at the head of the non-navigable Thames River, approximately 128 km from Toronto, and 43 km from London, Ontario. The city is known as the Dairy Capital of Canada and promotes itself as "The Friendly City".
Document 14: London, Kentucky: London is a home rule-class city in Laurel County, Kentucky, in the United States. It is the seat of its county. The population was 7,993 at the time of the 2010 U.S. census. London, Kentucky, is the second-largest city named London in the United States and the fourth-largest in the world. It is part of the London, Kentucky micropolitan area. Of the seventeen micropolitan areas in Kentucky, London is the largest; the London micropolitan area's 2010 Census population was 126,369. London is also home to the annual World Chicken Festival that celebrates the life of Colonel Sanders and features the world's largest skillet.
Document 15: Ottawa: Ottawa ( or ; ] ) 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.
ground_truth: London