Question: What is the capital of the county located in the administrative territorial entity of Mountain Retreat?

full_context: Document 1: Texas Prison Museum: The non-profit museum features the history of the prison system in Texas (Huntsville is the home of the Texas Department of Criminal Justice and several prisons including the Ellis Unit which previously housed death row, and Huntsville Unit which houses the execution chamber). There are many different artifacts in the museum, including an electric chair named "Old Sparky" that was formerly used from 1924 to 1964 as the primary means of execution.
Document 2: Mountain Ranch, California: Mountain Ranch (formerly, El Dorado and El Dorado Town) is a census-designated place (CDP) in Calaveras County, California, United States. The population was 1,628 at the 2010 census, up from 1,557 at the 2000 census. The town is registered as California Historical Landmark #282. The town center is quite small with fewer than 50 people living in it, the 5 mile square area surrounding the town accounts for the balance of the population.
Document 3: Hathaways Mountain Pines, California: Hathaways Mountain Pines (formerly, Hathaway's Mountain Pines) is an unincorporated community in Calaveras County, California. It lies at an elevation of 3448 feet (1051 m).
Document 4: Old Meigs County Courthouse: The Old Meigs County Courthouse is a historic former government building in the small community of Chester, Ohio, United States. Erected in the early nineteenth century, the courthouse served multiple purposes for the surrounding community in its early years, but it operated as a courthouse for less than twenty years before being abandoned in favor of another courthouse in another community. Following a restoration in the 1950s, it was designated a historic site in the 1970s along with an adjacent school; the two buildings are operated together as a museum. It is Ohio's oldest extant building constructed as a courthouse.
Document 5: Talking Mountain: Talking Mountain in El Dorado County, California is a peak in the Sierra Nevada located on the high ridge that extends eastward from the summit of Ralston Peak in the Eldorado National Forest. It is south of Lake Tahoe, south of Echo Lake and marks the border of the Desolation Wilderness. South of the summit, U.S. Route 50 follows the South Fork of the American River.
Document 6: Rescue, California: Rescue is an unincorporated community in El Dorado County, California. It is located north-northwest of Shingle Springs and north-northeast of Cameron Park. The zip code is 95672, and Rescue is located in area code 530. The town lies at an elevation of 1214 feet (370 m). It has also been noted for its unusual place name. Formerly Green Valley, El Dorado County, California
Document 7: Mountain Retreat, California: Mountain Retreat is an unincorporated community in Calaveras County, California. It lies at an elevation of 4052 feet (1235 m).
Document 8: Grizzly Ridge, California: Grizzly Ridge is an unincorporated community in Calaveras County, California. It lies at an elevation of 4301 feet (1311 m).
Document 9: Ebbetts Pass Highlands, California: Ebbetts Pass Highlands is an unincorporated community in Calaveras County, California. It lies at an elevation of 3504 feet (1068 m).
Document 10: Old Salem County Courthouse: Built in 1735, this building is the oldest active courthouse in New Jersey and is the second oldest courthouse still in continuous use in the United States. It was expanded in 1818 and 1908.
Document 11: Hudson County Courthouse: The courthouse was used as the primary seat of government for Hudson County from its opening on September 20, 1910 until the construction of the Hudson County Administration Building in 1966. The courthouse was vacant for many years and was scheduled for demolition. The building was added to the National Register of Historic Places on August 25, 1970. Restoration began in the mid-1970s, and the building was reopened in 1985. In 1984, the Hudson County Board of Chosen Freeholders renamed the building in honor of Supreme Court Justice William J. Brennan Jr. The restoration of the courthouse was acknowledged by a Victorian Society in America Preservation Award in 1988.
Document 12: Glencoe, California: Glencoe (formerly, Mosquito and Mosquito Gulch) is an unincorporated community in Calaveras County, California. It lies at an elevation of 2749 feet (838 m) and is located at . The community is in ZIP code 95232 and area code 209.
Document 13: Tombstone Courthouse State Historic Park: Tombstone Courthouse State Historic Park is a state park of Arizona in the United States. Located in Tombstone, the park preserves the original Cochise County courthouse. The two-story building, constructed in 1882 in the Victorian style, is laid out in the shape of a cross and once contained various county offices, including those of the sheriff, recorder, treasurer, and the Board of Supervisors as well as courtrooms and a jail. Inside, the courthouse contains a museum with numerous artifacts from the town's history while outside, a replica gallows has been constructed in the courtyard to mark the spot where seven men were hanged for various crimes. The park was one of the first to be designated as a state park and in 1959 was the first to open following the 1957 establishment of the Arizona State Parks Board.
Document 14: Jackson County Courthouse (Jacksonville, Oregon): The Jackson County Courthouse is a former county courthouse in Jacksonville, Oregon, United States, built in 1883. The courthouse is a contributing property of the Jacksonville Historic District, which is listed on the National Register of Historic Places (NRHP). It was formerly the Jacksonville Museum owned by Jackson County and operated by the Southern Oregon Historical Society (SOHS), which also managed several other historic properties in Jacksonville. The museum in the courthouse closed in 2006 because of lack of funding. Ownership of the historic courthouse was transferred to the City of Jacksonville in 2012. The SOHS still operates Hanley Farm in Central Point and a research library in Medford.
Document 15: Calaveras County Courthouse: The Calaveras County Courthouse is a historic courthouse building in San Andreas, California. The brick courthouse was built in 1867 and contained the county's courtroom, jail, and sheriff's office; until 1888, executions were also conducted in the building. The county's Hall of Records was built in front of the courthouse in 1893; the two buildings nearly touch and are considered part of the same complex. The building's jail held outlaw Black Bart, a notorious Northern California highwayman, during his 1883 trial. In 1966, the county moved its courthouse to a new building; the old courthouse is now the Calaveras County Museum, which is operated by the Calaveras County Historical Society.
ground_truth: San Andreas
sub_queries: Mountain Retreat >> located in the administrative territorial entity Answer: Calaveras County
Calaveras County >> capital Answer: San Andreas