Question: In which county was Mason Mathews Patrick born?

full_context: Document 1: Dwight D. Eisenhower: When the U.S. entered World War I he immediately requested an overseas assignment but was again denied and then assigned to Ft. Leavenworth, Kansas. In February 1918 he was transferred to Camp Meade in Maryland with the 65th Engineers. His unit was later ordered to France but to his chagrin he received orders for the new tank corps, where he was promoted to brevet Lieutenant Colonel in the National Army. He commanded a unit that trained tank crews at Camp Colt – his first command – at the site of "Pickett's Charge" on the Gettysburg, Pennsylvania Civil War battleground. Though Eisenhower and his tank crews never saw combat, he displayed excellent organizational skills, as well as an ability to accurately assess junior officers' strengths and make optimal placements of personnel.
Document 2: Cass, West Virginia: Cass is a census-designated place (CDP) on the Greenbrier River in Pocahontas County, West Virginia, USA. As of the 2010 census, its population was 52. The town, founded in 1901, was named for Joseph Kerr Cass, vice president and cofounder of the West Virginia Pulp and Paper Company.
Document 3: Charles Young (United States Army): Charles Young (March 12, 1864 -- January 8, 1922) was the third African - American graduate of West Point, the first black U.S. national park superintendent, first black military attaché, first black man to achieve the rank of colonel, and highest - ranking black officer in the Regular Army until his death in 1922.
Document 4: Lewis County, West Virginia: The median income for a household in the county was $27,066, and the median income for a family was $32,431. Males had a median income of $27,906 versus $18,733 for females. The per capita income for the county was $13,933. 19.90% of the population and 16.30% of families were below the poverty line. 27.00% of those under the age of 18 and 11.20% of those 65 and older were living below the poverty line.
Document 5: 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 6: Alta, Greenbrier County, West Virginia: Alta is an unincorporated community in Greenbrier County, West Virginia, United States. Alta is located at the junction of Interstate 64, U.S. Route 60, and West Virginia Route 12 northwest of Lewisburg.
Document 7: Miller Field (Staten Island): It was named after Captain James Ely Miller (1883–1918), commanding officer of the 95th Aero Squadron in the Air Service of the AEF, who died in combat on March 9, 1918 over Rheims in World War I. He was the first United States aviator killed in action while serving with an American military aviation unit. Before World War I Miller had been vice president of the Columbia Trust Company of New York and manager of its Fifth Avenue office who trained at his own expense to earn his pilot's license and Reserve Military Aviator rating with the Governors Island Training Corps in 1916. He was also an organizer, along with Major Raynal Bolling, of the 1st Reserve Aero Squadron, the first unit of what would eventually become the Air Force Reserve Command.
Document 8: Dwight D. Eisenhower: Historians have concluded that this assignment provided valuable preparation for handling the challenging personalities of Winston Churchill, George S. Patton, George Marshall, and General Montgomery during World War II. Eisenhower later emphasized that too much had been made of the disagreements with MacArthur, and that a positive relationship endured. While in Manila, Mamie suffered a life-threatening stomach ailment but recovered fully. Eisenhower was promoted to the rank of permanent lieutenant colonel in 1936. He also learned to fly, making a solo flight over the Philippines in 1937 and obtained his private pilot's license in 1939 at Fort Lewis. Also around this time, he was offered a post by the Philippine Commonwealth Government, namely by then Philippine President Manuel L. Quezon on recommendations by MacArthur, to become the chief of police of a new capital being planned, now named Quezon City, but he declined the offer.
Document 9: Townsend Griffiss: Griffiss graduated from the United States Military Academy at West Point in 1922, and joined the U.S. Army Air Corps. He trained as a fighter pilot in Texas, then served in Hawaii from 1925 to 1928. His family's wealth allowed him to rent a house on Waikiki Beach, and there he wrote a guidebook "When you go to Hawaii you will need this guide to the Islands", which was published in 1930. He shared his birth-father's passion for polo, and joined the military team based in Hawaii, led by Major George S. Patton.
Document 10: Billy Mitchell: Mitchell served in France during World War I and, by the conflict's end, commanded all American air combat units in that country. After the war, he was appointed deputy director of the Air Service and began advocating increased investment in air power, believing that this would prove vital in future wars. He argued particularly for the ability of bombers to sink battleships and organized a series of bombing runs against stationary ships designed to test the idea.
Document 11: Greenbrier Valley Airport: Greenbrier Valley Airport IATA: LWB ICAO: KLWB FAA LID: LWB Summary Airport type Public Owner Greenbrier County Airport Authority Serves Lewisburg, West Virginia Location Greenbrier County, West Virginia, near Lewisburg and White Sulphur Springs Elevation AMSL 2,301 ft / 701 m Coordinates 37 ° 51 ′ 30 ''N 080 ° 23 ′ 58'' W ﻿ / ﻿ 37.85833 ° N 80.39944 ° W ﻿ / 37.85833; - 80.39944 Coordinates: 37 ° 51 ′ 30 ''N 080 ° 23 ′ 58'' W ﻿ / ﻿ 37.85833 ° N 80.39944 ° W ﻿ / 37.85833; - 80.39944 Website www.gvairport.com Map LWB LWB Show map of West Virginia Show map of the US Show all Location of airport in West Virginia / United States Runways Direction Length Surface ft m 4 / 22 7,003 2,135 Asphalt Statistics (2012) Aircraft operations 23,954 Based aircraft 26 Source: Federal Aviation Administration
Document 12: Greenview, West Virginia: Greenview is a census-designated place in Boone County, West Virginia, United States. Its population was 378 as of the 2010 census.
Document 13: Lewisburg, West Virginia: Lewisburg is a city in Greenbrier County, West Virginia, United States. The population was 3,830 at the 2010 census. It is the county seat of Greenbrier County.
Document 14: Emory Jenison Pike: Emory Jenison Pike (December 18, 1876 – September 16, 1918) was a United States Army officer during World War I who received the Medal of Honor for his actions at Vandieres, France on September 15, 1918. A 1901 graduate of West Point, and the only West Point graduate to be awarded the Medal of Honor during World War I, Pike was a lieutenant colonel at Vandieres. His daughter was presented his Medal of Honor after the war. He was buried at Woodland Cemetery, Des Moines, Iowa.
Document 15: Mason Patrick: He was born and educated in Lewisburg, West Virginia and at age 18 entered U.S. Military Academy at West Point, where he finished second in his class behind classmate John J. Pershing. Early in his career, he served as Chief Engineer for the Army of Cuban Pacification and 1st U.S. Army Engineers on the U.S.-Mexico border. He served in France during World War I and was appointed Chief of Air Service by General Pershing in May 1918. Under his direction the Air Service established experimental facilities at Wright Field, Ohio and San Antonio, Texas.
ground_truth: Greenbrier County
sub_queries: Mason Mathews Patrick >> place of birth Answer: Lewisburg
Lewisburg >> located in the administrative territorial entity Answer: Greenbrier County