Question: What county shares a border with the county of Tolbert, West Virginia?

full_context: Document 1: Elbert, West Virginia: Elbert is an unincorporated community located in McDowell County, West Virginia, United States. Founded as a coal town, the community is now part of the City of Gary after its post office closed. Elbert was an independent community and was incorporated into Gary, West Virginia in 1971.
Document 2: 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 3: Tolbert, West Virginia: Tolbert is an unincorporated community in Nicholas County, West Virginia, United States. Tolbert is located on West Virginia Route 20 west-southwest of Richwood.
Document 4: 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 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: 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 7: 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 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: Gallatin River: The Gallatin River is a tributary of the Missouri River, approximately 120 mi (193 km long), in the U.S. states of Wyoming and Montana. It is one of three rivers, along with the Jefferson and Madison, that converge near Three Forks, Montana, to form the Missouri.
Document 10: Bolair, West Virginia: Bolair is a small unincorporated community in Webster County, West Virginia, United States, on West Virginia Route 20. To the east is the smaller town of Jerryville. Both towns are about 75 miles east of the state capital, Charleston. The Gauley River runs through the center of the community.
Document 11: 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.
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: 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 14: 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 15: Lockwood, West Virginia: Lockwood is an unincorporated community in western Nicholas County, West Virginia, United States. The town is situated along Otter Creek and West Virginia Route 39.
ground_truth: Greenbrier County
sub_queries: Tolbert, West Virginia >> located in the administrative territorial entity Answer: Nicholas County
Nicholas County >> shares border with Answer: Greenbrier County