Question: The hamlet Ashton is part of a city located on what river?

Context paragraphs:
Limerick: Limerick ( ; Irish: "Luimneach" ] ) is a city in County Limerick, Ireland.  It is located in the Mid-West Region and is also part of the province of Munster.  Limerick City and County Council is the local authority for the city.  The city lies on the River Shannon, with the historic core of the city located on King's Island, which is bounded by the Shannon and the Abbey River.  Limerick is also located at the head of the Shannon Estuary where the river widens before it flows into the Atlantic Ocean.  With a population of 94,192 (2016 census), Limerick is the third most populous urban area in the state, and the fourth most populous city on the island of Ireland.

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.

Ashton, Ontario: The small village of Ashton is located about 40 km southwest of Ottawa, Ontario, Canada, at the intersection of Ashton Station Road and Flewellyn Road.  Ashton Station Road runs through the centre of the community, and serves as the south-western boundary line for the City of Ottawa, thus making the eastern half of the hamlet part of Ottawa, and the western portion part of Lanark County.  The eastern half of the community was originally part of Goulbourn Township, which was amalgamated into the City of Ottawa in 2001.  It is home to approximately 200 residents.

Ashton, Cambridgeshire: Ashton is a hamlet in the English county of Cambridgeshire.  It falls within Bainton civil parish, part of the city of Peterborough unitary authority.

Newburgh, New York: Newburgh is a city located in Orange County, New York, United States, 60 mi north of New York City, and 90 mi south of Albany, on the Hudson River.  Newburgh is a part of the New York CSA.  The Newburgh area was first settled in the early 18th century by the Germans and British.  During the American Revolution, Newburgh served as the headquarters of the Continental Army.  Prior to its chartering in 1865, the city of Newburgh was part of the town of Newburgh; the town now borders the city to the north and west.  East of the city is the Hudson River; the city of Beacon, New York is across the river; and it is connected to Newburgh via the Newburgh–Beacon Bridge.  The entire southern boundary of the city is with the town of New Windsor.  Most of this boundary is formed by Quassaick Creek.

Kizugawa, Kyoto: Kizugawa (木津川市 , Kizugawa-shi ) is a city located in southern Kyoto Prefecture, Japan.  It is the southernmost city in the prefecture and it is named after the Kizu River, a tributary of the Yodo River, which runs through the city.  Kizugawa City is a part of the Kansai Science City project and houses research facilities of several corporations, including Rohto Pharmaceutical and Omron.

Ashton, Devon: Ashton is a civil parish in the Teignbridge district of Devon, England.  According to the 2001 census it had a population of 174, and it had a population of 203 according to the 2011 census.  The parish consists of two villages, Higher Ashton and Lower Ashton, and is on the edge of the Dartmoor National Park.  The France Brook flows through most of Ashton just south of its main road, and along Ashton's eastern boundary flows the River Teign.  The parish is located approximately 13 km north of Newton Abbot, and roughly 10 km to the south west of its nearest city, Exeter.  Historically, Ashton has primarily been based inside the agricultural sector, but one of its most notifiable landmarks is the St John the Baptists church located in the Higher Ashton district.

Ashton Gate Stadium: Ashton Gate Stadium is a stadium in Ashton Gate, Bristol, England, and is the home of Bristol City F.C. and Bristol Rugby.  Located in the south-west of the city, just south of the River Avon, it currently has an all-seated capacity of 27,000.

Takamatsu, Kagawa: Takamatsu (高松市 , Takamatsu-shi , ]) is a city located in central Kagawa Prefecture on the island of Shikoku in Japan, and is the capital city of the prefectural government.  It is designated a core city by the Japanese Government.  It is a port city located on the Seto Inland Sea, and is the closest port to Honshu from Shikoku island.  For this reason it flourished under the Daimyo (feudal lords) as a castle town in the fiefdom of Takamatsu, during the Edo Period.  Takamatsu is a city with a large concentration of nationwide companies' branch offices, which play a large role in its economy, and it contains most of the national government's branch offices for Shikoku.  The castle tower formerly used as the symbol of the city was destroyed during the Meiji Period.  In 2004, construction of the Symbol Tower, the new symbol of Takamatsu, was completed.  The Symbol Tower is located in the Sunport area of the city.  The Symbol Tower is the tallest building in Takamatsu, and is right next to another tall building The JR Clement Hotel (formerly the ANA Clement Hotel), which is also part of the Sunport complex.

Peterborough: Peterborough ( ) is a cathedral city in Cambridgeshire, England, with a population of 183,631 in 2011.  Historically part of Northamptonshire, it is 73.6 mi north of London, on the River Nene which flows into the North Sea 30 mi to the north-east.  The railway station is an important stop on the East Coast Main Line between London and Edinburgh.

Supporting paragraphs: Ashton, Cambridgeshire Peterborough
Answer: River Nene