Question: Which county shares a border with the county in West Virginia where Donald is located?

full_context: Document 1: Appalachian Regional Airport: Appalachian Regional Airport is a public use airport located eight nautical miles (9 mi, 15 km) east of the central business district of Williamson, a city in Mingo County, West Virginia, United States. It is owned by the Mingo County Airport Authority. The airport was built on a reclaimed mine site near Varney, West Virginia, and opened in 2012.
Document 2: South Branch Wildlife Management Area: The South Branch Wildlife Management Area is of mixed oak-hickory woodlands and pastures in Hampshire and Hardy Counties, West Virginia, USA. The South Branch WMA consists of four separate tracts (McNeill, Bridge, Trough Club, and Sector) along the South Branch Potomac River around and south of the river gorge known as The Trough. It is known throughout the region for its dove, squirrel, deer, and wild turkey hunting. The WMA is owned by the West Virginia Division of Natural Resources.
Document 3: Donald, West Virginia: Donald is an unincorporated community in Nicholas County, West Virginia, United States. Donald is located by Richwood Municipal Airport east of Summersville.
Document 4: Cheat River: The Cheat River is a tributary of the Monongahela River in eastern West Virginia and southwestern Pennsylvania in the United States. Via the Ohio River, the Cheat and Monongahela are part of the Mississippi River watershed. Owing to the ruggedness of the surrounding Allegheny Mountains, the Cheat remains largely remote with few settlements or developments along its banks. Its headwaters are in the Cheat-Potomac Ranger District of the Monongahela National Forest.
Document 5: Meadow Creek, West Virginia: Meadow Creek is an unincorporated community in Summers County, West Virginia, United States. Meadow Creek is located on the New River, southwest of Meadow Bridge and north of Hinton.
Document 6: Meadow River: The Meadow River is a tributary of the Gauley River, making its headwaters in Greenbrier County and terminating in Nicholas County of West Virginia. It is named for the grassy meadows wetlands which its upper watershed drains, and from which it springs.
Document 7: New Hope, Nicholas County, West Virginia: New Hope (also called Fenwick Mountain) is an unincorporated community in Nicholas County in the U.S. state of West Virginia. New Hope lies between the communities of Fenwick and Nettie along West Virginia Routes 20 and 39. New Hope is also the location of nearby Richwood's municipal airport. Fenwick Mountain has three churches, New Hope Baptist Church, the Macedonia United Methodist Church and the Revival Center. Fenwick Mountain is predominantly a Christian community based on the timber and coal mining industries. Fenwick Mountain also has a Community Center which was converted from the old New Hope Elementary School. The New Hope Community also known as Fenwick Mountain receives its water supply from neighboring city of Richwood. Fenwick Mountain is also home of the famous Spencer Lumber Company.
Document 8: Mehi River: Mehi River, a watercourse that is part of the Barwon catchment within the Murray–Darling basin, is located in the Orana district of New South Wales, Australia.
Document 9: Dunmore, West Virginia: Dunmore is an unincorporated community in Pocahontas County, West Virginia, United States. Dunmore is located at the junction of West Virginia Route 28 and West Virginia Route 92 northeast of Marlinton. Dunmore has a post office with ZIP code 24934.
Document 10: Pool, West Virginia: Pool is an unincorporated community in southwestern Nicholas County, West Virginia, United States. It lies along CR 41-7 just east of Route 41, south of the town of Summersville, the county seat of Nicholas County. Its elevation is 2,142 feet (653 m). Although Pool is unincorporated, it has a ZIP code of 26684; it once had its own post office, which opened on March 31, 1881, and closed on March 19, 2011. The community took its name from standing pool of water near the original town site.
Document 11: Werth, West Virginia: Werth is an unincorporated community in Nicholas County, West Virginia, United States. Werth is located on West Virginia Route 55 northeast of Summersville.
Document 12: Guyandotte River: The Guyandotte River is a tributary of the Ohio River, approximately 166 mi (267 km) long, in southwestern West Virginia in the United States. It was named after the French term for the Wendat Native Americans. It drains an area of the unglaciated Allegheny Plateau south of the Ohio between the watersheds of the Kanawha River to the northeast and Twelvepole Creek and the Big Sandy River to the southwest. Via the Ohio River, it is part of the Mississippi River watershed.
Document 13: Fenwick, West Virginia: Fenwick is a census-designated place (CDP) in eastern Nicholas County, West Virginia, United States, adjacent to and immediately west of Richwood. As of the 2010 census, its population was 116. The town is situated at the bottomland surrounding the mouth of the Big Laurel Creek at its confluence with the Cherry River and has an elevation of 649 m (2129 ft). Fenwick is also the location of the convergence of three state highways: WV 55, WV 39, and WV 20 and acts as the western terminus of the Highland Scenic Highway.
Document 14: Poe, West Virginia: Poe is an unincorporated community in Nicholas County, West Virginia, United States. Poe is located on West Virginia Route 129 southwest of Summersville.
Document 15: Meadow, Utah: Meadow is a town in Millard County, Utah, United States. The population was 254 at the 2000 census. Originally called Meadow Creek, the town is located about eight miles south of Fillmore.
ground_truth: Greenbrier County
sub_queries: Donald, West Virginia >> located in the administrative territorial entity Answer: Nicholas County
Nicholas County >> shares border with Answer: Greenbrier County