paragraph_text: Knoxville Raceway is a semi-banked 1/2 mile dirt oval raceway (zook clay) located at the Marion County Fairgrounds in Knoxville, Iowa, United States. Races at the "Sprint Car Capital of the World" are held on Saturday nights from April through September each year. Some special events may start as early as Wednesday and build up to Saturday. Regular events include 305 cubic inch, 360 cubic inch and 410 cubic inch sprint car racing. Each August, the Raceway holds the paramount sprint car event in the United States, the Knoxville Nationals. The track is governed by the 24-member fair board elected by Marion County residents.

paragraph_text: Tara is the name of a fictional plantation in the state of Georgia, in the historical novel Gone with the Wind (1936) by Margaret Mitchell. In the story, Tara is located 5 miles (8 km) from Jonesboro (originally spelled Jonesborough), in Clayton County, on the east side of the Flint River about 20 miles (32 km) south of Atlanta.

paragraph_text: The ZEC Bras-Coupé-Desert is a "zone d'exploitation contrôlée" (controlled harvesting zone) (ZEC), located in the unorganized territory of Lac-Pythonga in La Vallée-de-la-Gatineau Regional County Municipality, in the administrative region of Outaouais, in Quebec, in Canada.

paragraph_text: Tracks include Tucson Raceway Park and Rillito Downs. Tucson Raceway Park hosts NASCAR-sanctioned auto racing events and is one of only two asphalt short tracks in Arizona. Rillito Downs is an in-town destination on weekends in January and February each year. This historic track held the first organized quarter horse races in the world, and they are still racing there. The racetrack is threatened by development. The Moltacqua racetrack, was another historic horse racetrack located on what is now Sabino Canyon Road and Vactor Ranch Trail, but it no longer exists.

paragraph_text: Seneca is an unincorporated community in Union County, New Mexico, United States. Seneca is located on New Mexico State Road 406 north-northeast of Clayton.

paragraph_text: Church Street United Methodist Church is a United Methodist church located on Henley Street in downtown Knoxville, Tennessee. The church building is considered a Knoxville landmark and is listed on the National Register of Historic Places.

paragraph_text: Ap Lo Chun () is a small island in the New Territories of Hong Kong. It is located in Ap Chau Bay () between Ap Chau in the east and Sai Ap Chau in the west, with the islet of Ap Tan Pai nearby in the northeast. It is under the administration of North District.

paragraph_text: Amistad is a small unincorporated community in Union County, New Mexico, U.S. It is located about 39 miles south of Clayton on New Mexico State Highway 402.

paragraph_text: Biysky District () is an administrative and municipal district (raion), one of the fifty-nine in Altai Krai, Russia. It is located in the east of the krai and borders with Zonalny, Tselinny, Soltonsky, Krasnogorsky, Sovetsky, and Smolensky Districts, as well as with the territory of the City of Biysk. The area of the district is . Its administrative center is the city of Biysk (which is not administratively a part of the district). District's population:

paragraph_text: Khabarovsky District () is an administrative and municipal district (raion), one of the seventeen in Khabarovsk Krai, Russia. It consists of two unconnected segments separated by the territory of Amursky District, which are located in the southwest of the krai. The area of the district is . Its administrative center is the city of Khabarovsk (which is not administratively a part of the district). Population:

paragraph_text: Wardville is a small unincorporated community in northern Atoka County, Oklahoma, United States, along State Highway 131 14 miles northeast of Coalgate, Oklahoma. The post office was established February 6, 1902 under the name Herbert, Oklahoma. Herbert was located in Atoka County, Choctaw Nation, a territorial-era entity which included portions of today's Atoka, Coal, Hughes and Pittsburg counties. The town was named after Herbert Ward, who was the youngest son of the towns first postmaster, Henry Pleasant Ward. The name of the town was changed to Wardville on July 18, 1907. Wardville was named for the before mentioned Henry Pleasant Ward, who served in the territorial House of Representatives and Senate and was an Atoka County judge. The Wardville Post Office closed in 2007.

paragraph_text: Potomac Speedway is a 3/8 mile clay oval raceway located in Budds Creek, Maryland, near Charlotte Hall. The raceway was first raced on in 1973. Races are typically held on Friday or Saturday nights. Regular events include Super Late Models, Limited Late Models, Street Stocks, and Hobby Stocks and 4 cylinders. The speedway also holds events for Modifieds, Crate Late Models, Strictly Stocks and Hornets. Potomac Speedway has a seating capacity of about 4,000 in the main grandstands and can hold an additional 1,000 in the pit area.

paragraph_text: WITA (1490 AM, "Inspiration 1490") is a Christian radio station located in Knoxville, Tennessee. It broadcasts a Christian format with some conservative talk shows and news from the USA Radio Network.

paragraph_text: Statesview, or States View, is a historic house located on South Peters Road off Kingston Pike in Knoxville, Tennessee, United States. Built in 1805 by early Knoxville architect Thomas Hope and rebuilt in 1823 following a fire, Statesview was originally the home of surveyor Charles McClung (1761–1835). Following McClung's death, newspaper publisher Frederick Heiskell (1786–1882) purchased the house and estate, which he renamed "Fruit Hill." The house is listed on the National Register of Historic Places for its architecture and political significance.

paragraph_text: Sardis Lake is a reservoir in Pushmataha County and Latimer County in Oklahoma, USA, named for the now-defunct town of Sardis, Oklahoma. The dam impounding the lake is located approximately north of Clayton.

paragraph_text: Clayton is an unincorporated community in Placer County, California. Clayton is located on the Southern Pacific Railroad, northwest of Lincoln. It lies at an elevation of 141 feet (43 m).

paragraph_text: In 1949, the Territory and the Territory of New Guinea were established in an administrative union by the name of the Territory of Papua and New Guinea. That administrative union was renamed as Papua New Guinea in 1971. Notwithstanding that it was part of an administrative union, the Territory of Papua at all times retained a distinct legal status and identity; it was a Possession of the Crown whereas the Territory of New Guinea was initially a League of Nations mandate territory and subsequently a United Nations trust territory. This important legal and political distinction remained until the advent of the Independent State of Papua New Guinea in 1975.

paragraph_text: Bogotá (/ ˈboʊɡətɑː /, / ˌbɒɡəˈtɑː /, / ˌboʊ - /; Spanish pronunciation: (boɣoˈta) (listen)), officially Bogotá, Distrito Capital, abbreviated Bogotá, D.C., and formerly known as Santafé de Bogotá between 1991 and 2000, is the capital and largest city of Colombia, administered as the Capital District, although often thought of as part of Cundinamarca. Bogotá is a territorial entity of the first order, with the same administrative status as the departments of Colombia. It is the political, economic, administrative, industrial, artistic, cultural, and sports center of the country.

paragraph_text: Clayton is a city in Clayton County, Iowa, United States. The population was 43 at the 2010 census, down from 55 at the 2000 census. Clayton is located directly on the Mississippi River and is only accessible by a very steep road. Many people have summer homes in Clayton due to its proximity to the Mississippi River.

paragraph_text: Paea is a commune in the suburbs of Papeete in French Polynesia, an overseas territory of France in the southern Pacific Ocean. Paea is located on the island of Tahiti, in the administrative subdivision of the Windward Islands, themselves part of the Society Islands. At the 2017 census it had a population of 13,021.

Question: What county contains Clayton in the US state having Knoxville Raceway?
Answer: Clayton County