Question: What is the capital of the county containing the city of Walnut Grove, in the state where St. Mark's Episcopal Chapel is located?

full_context: Document 1: Weedpatch Camp: Between April 1935 and December 1936, the federal government's New Deal Resettlement Administration (RA) had relocated many struggling rural and urban families to planned communities. Weedpatch Camp, however, was constructed by the Works Progress Administration. It was located on the outskirts of the small towns of Arvin and Weedpatch. The camp now is located in an unincorporated area of Kern County just south of Bakersfield.
Document 2: German Evangelical Lutheran Church of St. Mark: German Evangelical Lutheran Church of St. Mark is a historic church and synagogue building at 323 East 6th Street between First and Second Avenues in the East Village neighborhood of Manhattan, New York City. The Renaissance Revival style church was built in 1847 by the Evangelical Lutheran Church of St. Matthew which first rented it to St. Mark's and subsequently sold it to them in 1857. Much of the church membership was killed in the 1904 General Slocum disaster, and the congregation never recovered.
Document 3: Red Wing, Minnesota: Red Wing (Formerly Known as Wahcoota) is a city in Goodhue County, Minnesota, United States, along the upper Mississippi River. The population was 16,459 at the 2010 census. It is the county seat of Goodhue County.
Document 4: St. Mark's Episcopal Chapel: St. Mark's Episcopal Chapel is a small Gothic Revival chapel in Corinna Township, Minnesota, United States, built in 1871. It was listed on the National Register of Historic Places in 1979 for having local significance in the themes of architecture and religion. It was nominated as a well-preserved example of a board and batten Gothic Revival parish church.
Document 5: Greene County Almshouse: The Greene County Almshouse is a historic poorhouse located in Greene County, Illinois, along a township road northeast of the city of Carrollton. The almshouse was built in 1870 in accordance with an 1839 state law which provided for each county to establish its own almshouse or poor farm for welfare recipients. Prior to passage of the law, public welfare in Illinois had taken the form of "outdoor relief", in which the poor worked on farms in exchange for basic support. Under Illinois' county almshouse system, the poor were intended to receive shelter and necessities in the houses, often in exchange for farm labor on the property. By 1903, all but two of Illinois' counties had established an almshouse or poor farm.
Document 6: Redwood, Virginia: Redwood is an unincorporated community in Franklin County, Virginia, United States. Redwood is located on Virginia State Route 40 east-northeast of Rocky Mount. Redwood has a post office with ZIP code 24146, which opened on August 9, 1880. zip is incorrect 24092
Document 7: Redwood National and State Parks: In 1850, old-growth redwood forest covered more than 2,000,000 acres (8,100 km2) of the California coast. The northern portion of that area, originally inhabited by Native Americans, attracted many lumbermen and others turned gold miners when a minor gold rush brought them to the region. Failing in efforts to strike it rich in gold, these men turned toward harvesting the giant trees for booming development in San Francisco and other places on the West Coast. After many decades of unrestricted clear-cut logging, serious efforts toward conservation began. By the 1920s the work of the Save the Redwoods League, founded in 1918 to preserve remaining old-growth redwoods, resulted in the establishment of Prairie Creek, Del Norte Coast, and Jedediah Smith Redwoods State Parks among others. Redwood National Park was created in 1968, by which time nearly 90% of the original redwood trees had been logged. The National Park Service (NPS) and the California Department of Parks and Recreation (CDPR) administratively combined Redwood National Park with the three abutting Redwood State Parks in 1994 for the purpose of cooperative forest management and stabilization of forests and watersheds as a single unit.The ecosystem of the RNSP preserves a number of threatened animal species such as the tidewater goby, Chinook salmon, northern spotted owl, and Steller's sea lion. In recognition of the rare ecosystem and cultural history found in the parks, the United Nations designated them a World Heritage Site on September 5, 1980 and part of the California Coast Ranges International Biosphere Reserve on June 30, 1983.
Document 8: Trinity Episcopal Church (Stockton, Minnesota): Trinity Episcopal Church is a historic church building in Stockton, Minnesota, United States, constructed in 1859. It is now the Grace Evangelical Lutheran Church and was enlarged with a new wing in 1971. The original section was listed on the National Register of Historic Places in 1984 for having local significance in the themes of architecture and exploration/settlement. It was nominated for its well-preserved Carpenter Gothic architecture and shared importance to a community established by American-born settlers but later dominated by German immigrants.
Document 9: St. Andrew's-by-the-Sea: St. Andrew's-by-the-Sea is a historic Episcopal chapel on Church Road, southeast of the junction with South Road and Route 1A in Rye, New Hampshire. Built in 1876, it is the only known religious work of Boston architects Winslow & Wetherell, and one of a modest number of churches built for summer vacationers in the state. It is an eclectic mix of Gothic Revival and Stick Style, and was listed on the National Register of Historic Places in 2001.
Document 10: Poplar Grove Township, Roseau County, Minnesota: Poplar Grove Township is a township in Roseau County, Minnesota, United States. The population was 80 at the 2000 census.
Document 11: Walnut Grove, Minnesota: Walnut Grove is a city in Redwood County, Minnesota, United States. The population was 871 at the 2010 census. Another name formerly associated with the area is Walnut Station.
Document 12: Redwood County Poor Farm: The Redwood County Poor Farm (or Poorhouse) was a county run institution serving impoverished and aged people in Redwood Falls, Minnesota, United States, from 1884 to 1889 and again from 1909 to 1967, when it was converted to a nursing home.
Document 13: Walnut Grove, Washington: Walnut Grove is a census-designated place (CDP) in Clark County, Washington, United States. The population was 9,790 at the 2010 census, up from 7,164 at the 2000 census.
Document 14: Norwood Methodist Episcopal Church: Norwood Methodist Episcopal Church, also known as the Church in the Maples, is a historic church in Norwood Young America, Minnesota, United States. The building is in the Romanesque style, which was popular for public buildings in Minnesota but uncommon in Carver County. It has semicircular door and window openings, a wheel window in the belfry, quatrefoil window sash decorations, and broad and smooth walls.
Document 15: Walnut Grove, Minnesota: Walnut Grove, Minnesota City U.S. Post Office, First State Bank Building, and water tower in Walnut Grove Location of Walnut Grove, Minnesota Coordinates: 44 ° 13 ′ 25 ''N 95 ° 28 ′ 8'' W ﻿ / ﻿ 44.22361 ° N 95.46889 ° W ﻿ / 44.22361; - 95.46889 Coordinates: 44 ° 13 ′ 25 ''N 95 ° 28 ′ 8'' W ﻿ / ﻿ 44.22361 ° N 95.46889 ° W ﻿ / 44.22361; - 95.46889 Country United States State Minnesota County Redwood Founded 1874 Incorporated 1879 Area Total 1.06 sq mi (2.75 km) Land 1.06 sq mi (2.75 km) Water 0 sq mi (0 km) Elevation 1,217 ft (371 m) Population (2010) Total 871 Estimate (2016) 813 Density 820 / sq mi (320 / km) Time zone Central (CST) (UTC - 6) Summer (DST) CDT (UTC - 5) ZIP code 56180 Area code (s) 507 FIPS code 27 - 67846 GNIS feature ID 0653743
ground_truth: Redwood Falls
sub_queries: In which state is St. Mark's Episcopal Chapel located? Answer: Minnesota
Walnut Grove, Minnesota >> located in the administrative territorial entity Answer: Redwood County
Redwood County >> capital Answer: Redwood Falls