Question: What county shares a border with another county, where the community of Firebrick is located?

full_context: Document 1: Robert C. Kirkwood: Robert C. Kirkwood (August 30, 1909 – May 5, 1964) served as a member of the California State Assembly representing part of Santa Clara County from 1947 until 1953, when he resigned to accept an appointment as California State Controller by Governor Earl Warren. Kirkwood was elected to a full term in 1954, but lost a re-election bid in 1958 to Alan Cranston, who later became a United States Senator.
Document 2: Pete Goicoechea: Goicoechea was born in Salt Lake City and studied at Utah State University. He has owned a ranch since 1970 and also worked for many years for the Eureka County, Nevada road department. He served on the Eureka County Commission from 1987 to 2002 and then was elected to the Nevada State Assembly. He has also served as a member of the Nevada State Land Use Planning Advisory Council, the Nevada Grazing Board, and he has been the Director of the Nevada Water Resource Association. He is affiliated with the Eureka Volunteer Fire Department, E Clampus Vitus, the Humboldt River Authority, and the Nevada Rural Health Center. Goicoechea is a Catholic. He and his wife Glady are the parents of two children.
Document 3: Southern California: Subsequently, Californios (dissatisfied with inequitable taxes and land laws) and pro-slavery southerners in the lightly populated "Cow Counties" of southern California attempted three times in the 1850s to achieve a separate statehood or territorial status separate from Northern California. The last attempt, the Pico Act of 1859, was passed by the California State Legislature and signed by the State governor John B. Weller. It was approved overwhelmingly by nearly 75% of voters in the proposed Territory of Colorado. This territory was to include all the counties up to the then much larger Tulare County (that included what is now Kings, most of Kern, and part of Inyo counties) and San Luis Obispo County. The proposal was sent to Washington, D.C. with a strong advocate in Senator Milton Latham. However, the secession crisis following the election of Abraham Lincoln in 1860 led to the proposal never coming to a vote.
Document 4: Firebrick, Kentucky: Firebrick is an unincorporated community in Lewis County, Kentucky, United States. The Firebrick post office, opened in 1892 with postmaster William Beyerly, closed in January 2004
Document 5: Brandon Corner, California: Brandon Corner (formerly, Brandons) is an unincorporated community in El Dorado County, California. It is located northeast of Latrobe, at an elevation of 748 feet (228 m).
Document 6: Lower Rancheria, California: Lower Rancheria is a former settlement in Amador County, California. It was located on Rancheria Creek east-southeast of Drytown, at an elevation of 1017 feet (310 m). Placer mining began at Lower Rancheria in 1848.
Document 7: Bernard Coy: Coy was a native of Kentucky who turned to crime during the Great Depression and, in 1937, was sentenced to 25 years imprisonment. He was transferred to Alcatraz from Atlanta in 1938 and was later given the position of cell-house orderly which allowed him access through most of the main cell-block on Alcatraz. This relative freedom allowed him to spot a tiny flaw in one of the prison's security features, the bars of the gun-gallery overlooking the cell house. Coy along with Joe Cretzer, Marvin Hubbard, Sam Shockley, Miran Thompson, and Clarence Carnes planned to break into the gun galleries to steal weapons, take hostages and then flee to the dock. He was successful in creating a makeshift bar-spreader that enabled him to get through the relatively weak bars that protected the gun galleries and overpower the unsuspecting guard on his return from investigating a fabricated incident caused by Shockley in the prison's secure unit, D-Block.
Document 8: Chinatown, Amador County, California: Chinatown is a former settlement in Amador County, California. It is situated at an elevation of 344 feet (105 m).
Document 9: Scottsville, California: Scottsville is an unincorporated community in Amador County, California. It is southeast of Jackson. It lies at an elevation of 1270 feet (387 m).
Document 10: Charles P. Snyder: After studying law, he was admitted to the bar and opened a practice. He became prosecuting attorney of Kanawha County and served from 1876 to 1884. He was elected in 1882 to the Forty-eighth Congress to fill the vacancy caused by the resignation of John E. Kenna He won re-election to the Forty-ninth and Fiftieth Congresses and served from May 15, 1883 to March 3, 1889. He served as a judge on the criminal court of Kanawha County from 1890 to 1896. He was named United States consul to Ciudad Porfirio Diaz, Mexico from 1897 to 1901. He died in Vineland, New Jersey in Cumberland County on August 21, 1915 and was buried in Spring Hill Cemetery in Charleston, West Virginia.
Document 11: Pine Grove, Amador County, California: Pine Grove is a census-designated place in Amador County, California. It lies at an elevation of 2513 feet (766 m). The population was 2,219 at the 2010 census. It is located at , along State Route 88. The community is in ZIP code 95665 and area code 209.
Document 12: Firebrick, California: Firebrick is an unincorporated community in Amador County, California. It is located south-southeast of Ione on the Amador Central Railroad, at an elevation of 377 feet (115 m).
Document 13: Warner Cope: Born in Kentucky, Cope came to California in 1850 and tried mining, but found little success. In 1853 he resumed work as an attorney, first in El Dorado County and the next year in Jackson, Amador County. In October 1858, he was elected to the California State Assembly from Amador as a Democrat.
Document 14: David C. Westenhaver: Born in Berkeley County, West Virginia, Westenhaver received a Bachelor of Laws from Georgetown Law in 1886. He was in private practice in Martinsburg, West Virginia from 1886 to 1903, serving as a prosecuting attorney of Berkeley County from 1886 to 1887, and as a member of the Martinsburg City Council from 1902 to 1903. He then moved his practice to Cleveland, Ohio from 1903 to 1917, and was a member of the Board of Education of Cleveland from 1912 to 1915.
Document 15: Forest Home, Amador County, California: Forest Home is a former settlement in Amador County, California. It was located west of Plymouth, at an elevation of 581 feet (177 m). It still appeared on USGS maps as of 1944.
ground_truth: El Dorado County
sub_queries: Firebrick >> located in the administrative territorial entity Answer: Amador County
Amador County >> shares border with Answer: El Dorado County