Question: What county is the city where Leonard S. Echols was born located?

full_context: Document 1: Leonard S. Echols: Leonard Sidney Echols (October 30, 1871 – May 9, 1946) was an American politician who represented West Virginia in the United States House of Representatives from 1919 to 1923.
Document 2: 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 3: Century, West Virginia: Century is a census-designated place and coal town in Barbour County, West Virginia, USA. Its population was 115 as of the 2010 census.
Document 4: Benson Everett Legg: Legg was born in Baltimore, Maryland. After receiving his education at the preparatory school Gilman School in Baltimore, graduating in the class of 1966, he earned an Artium Baccalaureus degree from Princeton University in 1970. He went on to obtain a Juris Doctor from the University of Virginia School of Law in 1973 and was admitted to the Maryland bar the same year. From 1973 to 1974, Legg was a law clerk to Judge Frank A. Kaufman of the United States District Court for the District of Maryland and then practiced law privately in Baltimore from 1975 to 1991.
Document 5: W. Craig Broadwater: Born in Elk City, Oklahoma, Broadwater graduated from Paden City High School in West Virginia and received a Bachelor of Arts degree from West Virginia University in 1972 and a Juris Doctor from West Virginia University College of Law in 1977. He was also a Lieutenant in the United States Army from 1972 to 1982. He was in private practice in Wheeling, West Virginia from 1977 to 1983. He was a Hearing examiner for the West Virginia Worker's Compensation Fund from 1978 to 1981. He was a Special prosecuting attorney of Ohio County, West Virginia from 1982 to 1983, and then became a circuit court judge for the First Judicial Circuit of West Virginia, from 1983 to 1996.
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: Alexander Holladay: Alexander Holladay attended public schools as a child and received special training under John Lewis at the Llangollen School, Bel Air, in Spotsylvania County, then attended the University of Virginia, where he studied law.
Document 8: Danville, West Virginia: Danville is a town in Boone County, West Virginia, United States. The population was 691 at the 2010 census. Danville was incorporated in 1911 and named for Dan Rock, the town's first postmaster. Danville was formerly known as Newport and Red House.
Document 9: Charlie Bethel: Charlie Bethel graduated cum laude in 1998 from the University of Georgia's Terry College of Business with a Bachelor of Business Administration in business management. He stayed with the University of Georgia, graduating with a Juris Doctor from the University of Georgia School of Law in 2001. Bethel was admitted to the State Bar of Georgia in 2001 and practiced law from 2003–2005. He is admitted to practice law in all of Georgia's state courts, the United States District Court for the Northern District of Georgia, and the Supreme Court of the United States. Bethel was an assistant solicitor for the city of Dalton from 2003–2004.
Document 10: Leonard S. Echols: Echols was born in Madison, West Virginia. He attended the public schools. He was graduated from the commercial department of the University of Kentucky at Lexington in 1894, from the Concord State Normal School, Athens, West Virginia in 1898, and from the law department of the Southern Normal University, Huntingdon, Tennessee in 1900. After all his formal education, he was admitted to the bar in 1900 and commenced practice in Point Pleasant, West Virginia in 1903.
Document 11: 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 12: 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 13: Twilight, West Virginia: Twilight is a census-designated place (CDP) in Boone County, West Virginia, United States. As of the 2010 census, its population was 90. Twilight is approximately 20 miles from Madison. Twilight is accessible from Boone County Route 26, which is located right off West Virginia Route 85 at the Van Bridge split.
Document 14: 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 15: 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.
ground_truth: Boone County
sub_queries: Leonard S. Echols >> place of birth Answer: Madison
Madison >> located in the administrative territorial entity Answer: Boone County