Question: KLAS-TV's studios are located in what Nevada county?

Context paragraphs:
Doris Foley Library for Historical Research: The Doris Foley Library for Historical Research (formerly, Nevada City Free Public Library and Nevada City Library; colloquially: Carnegie Library or Foley) is a reference and research library in Nevada City, in Nevada County, California.  Built in 1907, the Romanesque Revival style building is currently a branch of the Nevada County Library System.

Nevada County Traction Company: The Nevada County Traction Company was an interurban electrified railway in Nevada County, part of the U.S. State of California in the United States of America.  It connected Grass Valley and Nevada City, a total of about six miles of track, using streetcar technology.  Construction was in 1901; founder and promoter John Martin intended to build a system connecting the area to Sacramento, the state capital, but this was never begun.  Abandonment was in 1923.

KLAS-TV: KLAS-TV, virtual channel 8 (VHF digital channel 7), is a CBS-affiliated television station located in Las Vegas, Nevada, United States.  The station is owned by Nexstar Media Group.  KLAS-TV's studios are located at 3228 Channel 8 Drive near the northern portion of the Las Vegas Strip in the unincorporated community of Winchester (though with a Las Vegas address) and its transmitter is located on Mount Arden in Henderson.

Marion Cannon: Marion Cannon (October 30, 1834 – August 27, 1920) was a United States Representative from California.  He was born near Morgantown, West Virginia.  He attended the district school and learned the blacksmith trade.  He moved to California in 1852 and engaged in mining in Nevada County for twenty-one years.  He was elected county recorder of Nevada County in 1869 and served two years.  He then moved to Ventura County, California and settled near Ventura in 1874 and engaged in agricultural pursuits.

Kingvale, California: Kingvale is a census-designated place (CDP) in Placer County and Nevada County, California, United States.  The CDP straddles the border of the two counties, with Nevada County to the north and Placer County to the south.  It is located near Soda Springs, 5.5 mi west of Donner Pass.  Kingvale was listed on an official map as of 1955.  The population was 143 at the 2010 census.

Nevada County, Arkansas: Nevada County is a county located in the U.S. state of Arkansas.  As of the 2010 census, the population was 8,997.  The county seat is Prescott.  Nevada County is Arkansas's 63rd county, formed on March 20, 1871, from portions of Hempstead, Ouachita and Columbia Counties.  It was named after the state of Nevada because of the perceived similarity between their physical shapes; the Arkansas county's shape roughly follows the same outline as the state's boundary when inverted.  In contrast with the name of the state, the local pronunciation for the southwestern Arkansas county is "nuh-VAY-duh".  It is an alcohol prohibition or dry county.

Kres, California: Kres is an unincorporated community in Nevada County, California.  It lies at an elevation of 2861 feet (872 m).  Kres is located on the Nevada County Narrow Gauge Railroad, 3 mi east-southeast of Grass Valley.

Winchester, Nevada: Winchester is an unincorporated town and census-designated place (CDP) and part of Las Vegas Township in Clark County, Nevada, United States that contains part of the Las Vegas Strip.  It is one of a number of CDPs in the unincorporated urbanized area directly south of Las Vegas.  The population was 27,978 at the 2010 census.  It is governed by the Clark County Commission with advice from the Winchester Town Advisory Board.  "Winchester, NV" does not appear in postal addresses; the United States Postal Service has assigned "Las Vegas, NV" as the place name for the ZIP codes containing Winchester.

Nevada County Narrow Gauge Railroad: The Nevada County Narrow Gauge Railroad (NCNGRR) (nickname: "Never Come, Never Go") was located in Northern California's Nevada County and Placer County, where it connected with the Central Pacific Railroad.  The Nevada County Narrow Gauge Railroad Company incorporated on April 4, 1874, and was headquartered in Grass Valley, California.  After two years of construction, passenger and commercial rail services began in 1876 and continued until 1943.  The 22.53 mi line ran from Colfax, north through Grass Valley to Nevada City.  At one time, the railroad was notable for having the highest railroad bridge in California, the Bear River Bridge, built in 1908.

Nevada County Air Park: Nevada County Air Park (ICAO: KGOO) is a county-owned public use airport in Nevada County, California, United States.  The airport is located three nautical miles (6 km) east of the central business district of Grass Valley, California.  It is also known as Nevada County Airport.

Supporting paragraphs: KLAS-TV Winchester, Nevada
Answer: Clark County