Question: What county holds the city where Augustin Reed Humphrey was born?

full_context: Document 1: Center Township, Marion County, Indiana: Center Township is one of nine townships in Marion County, Indiana, in the United States. As of the 2010 census, its population was 142,787 and it contained 76,872 housing units. It is the most populated township in Marion County.
Document 2: Indiana: Indiana  (listen) is a U.S. state in the Midwestern and Great Lakes regions of North America. Indiana is the 38th-largest by area and the 17th-most populous of the 50 United States. Its capital and largest city is Indianapolis. Indiana was admitted to the United States as the 19th U.S. state on December 11, 1816. Indiana borders Lake Michigan to the northwest, Michigan to the north, Ohio to the east, Kentucky to the south and southeast, and Illinois to the west.
Document 3: Madison Township, Jackson County, Ohio: Madison Township is one of the twelve townships of Jackson County, Ohio, United States. As of the 2010 census, 2,188 people lived in the township, including 1,549 in its unincorporated areas.
Document 4: Augustin Reed Humphrey: Humphrey was born in 1859 near Madison, Indiana. He moved with his family to Drakesville, Iowa, in 1864. Humphrey graduated from the Southern Iowa Normal School at Bloomfield in 1881; and the law department of the University of Iowa in 1882. He passed the Bar in the same year. Humphrey started to practice law in Broken Bow, Nebraska in 1885, and received a homestead in Custer County, Nebraska in 1886, where he farmed and raised livestock.
Document 5: Bradford Knapp: Bradford Knapp was born in Vinton, Iowa on December 24, 1870 to Seaman A. Knapp. In 1899, he attended Iowa State College and graduated with a B.A. in chemistry from Vanderbilt University in 1892. In 1894, he attended Georgetown University and received a B.L. from the University of Michigan in 1896. In 1909, he worked as an assistant for his father in the Bureau of Plant Industry of the United States Department of Agriculture. From 1911 to 1915, he took up his father's position as Chief of Farm Demonstration Work. In 1915, he became Chief of Southern Extension Work for the States Relations Service of the USDA.
Document 6: Madison, West Virginia: Madison is a city and former coal town in Boone County, West Virginia, United States. The population was 3,076 at the 2010 census. It is the county seat of Boone County.
Document 7: Edward Deering Mansfield: Mansfield was born in New Haven, Connecticut, son of Jared Mansfield. He graduated from West Point in 1818, but declined to enter the army and studied at Princeton, from which he graduated in 1822. In 1825 he was admitted to the Connecticut bar. He afterward removed to Cincinnati, and in 1836 became professor of constitutional law at Cincinnati College. Shortly afterward, however, he abandoned the legal profession to engage in journalism, and edited successively the Cincinnati "Chronicle" (1836–49), "Atlas" (1849–52), and "Railroad Record" (1854–72). While editing the "Chronicle" and "Atlas" he introduced many young writers to the public, among whom was Harriet Beecher Stowe. He was Commissioner of Statistics for the State of Ohio from 1859 to 1868 and was a member of the Société française de statistique universelle. He published:
Document 8: Humphrey Center: The Humphrey Center, also known as Old Main, is an historic building located on the campus of Grand View University in Des Moines, Iowa, United States. It was listed on the National Register of Historic Places in 1978.
Document 9: Madison Township, Scioto County, Ohio: Madison Township is one of the sixteen townships of Scioto County, Ohio, United States. The 2010 census counted 4,106 people in the township.
Document 10: William A. McKeighan: McKeighan was born in Millville, New Jersey. He moved with his parents to Fulton County, Illinois in 1848. He enlisted in the 11th Regiment Illinois Volunteer Cavalry, in September 1861, to fight in the Civil War. When the war ended he was stationed on a farm near Pontiac, Illinois. He decided to take up farming. He moved to Nebraska in 1880 and continued farming near Red Cloud, Nebraska.
Document 11: Madison Township, Franklin County, Ohio: Madison Township is one of the seventeen townships of Franklin County, Ohio, United States. The 2010 census found 23,509 people in the township, 10,795 of whom lived in the unincorporated portions of the township.
Document 12: Newton Edmunds: Newton Edmunds was born in Hartland, New York on May 31, 1819. In 1832, he moved with his family to Michigan. The Edmunds family was involved with politics, associating with the Free Soilers before affiliating with the Republican Party. Newton Edmunds' brother, C. E. Edmunds, was Commissioner of the United States Land Office. Newton Edmunds was appointed as chief clerk in the surveyor-general's office, resulting in Edmunds' arrival in Dakota Territory in 1861. On August 30, 1862, Edmunds was elected as eighth corporal of Company A of the Dakota Militia, following the Santee uprising.
Document 13: Laura Ingalls Wilder: In 1894, the Wilder family moved to Mansfield, Missouri, and used their savings to make the down payment on an undeveloped property just outside town. They named the place Rocky Ridge Farm and moved into a ramshackle log cabin. At first, Wilder and her husband earned income only from wagon loads of fire wood they would sell in town for 50 cents. Financial security came slowly. Apple trees they planted did not bear fruit for seven years. Wilder's parents - in - law visited around that time and gave them the deed to the house they had been renting in Mansfield, which was the economic boost Wilder's family needed. They then added to the property outside town, and eventually accrued nearly 200 acres (80.9 hectares). Around 1910, they sold the house in town, moved back to the farm, and completed the farmhouse with the proceeds. What began as about 40 acres (16.2 hectares) of thickly wooded, stone - covered hillside with a windowless log cabin became in 20 years a relatively prosperous poultry, dairy, and fruit farm, and a 10 - room farmhouse.
Document 14: Madison, Indiana: Madison is a city in and the county seat of Jefferson County, Indiana, United States, along the Ohio River. As of the 2017 United States Census estimate its population was 11,777. Over 55,000 people live within of downtown Madison. Madison is the largest city along the Ohio River between Louisville and Cincinnati. Madison is one of the core cities of the Louisville-Elizabethtown-Madison metroplex, an area with a population of approximately 1.5 million. In 2006, the majority of Madison's downtown area was designated the largest contiguous National Historic Landmark in the United States—133 blocks of the downtown area is known as the Madison Historic Landmark District.
Document 15: Fall Creek Township, Madison County, Indiana: Fall Creek Township is one of fourteen townships in Madison County, Indiana, United States. As of the 2010 census, its population was 14,695 and it contained 4,570 housing units.
ground_truth: Jefferson County
sub_queries: Augustin Reed Humphrey >> place of birth Answer: Madison
Madison >> located in the administrative territorial entity Answer: Jefferson County