Question: Alta, West Virginia, whose county shares a border with the county that contains Poe, is in what country?

full_context: Document 1: 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 2: Pinepoca, West Virginia: Pinepoca is a former settlement in Raleigh County, West Virginia, United States. Pinepoca was east-northeast of Beckley. Pinepoca appeared on USGS maps as late as 1929.
Document 3: 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 4: 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 5: 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 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: 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: Alta, Fayette County, West Virginia: Alta is an unincorporated community in Fayette County, West Virginia, United States. Alta is located on West Virginia Route 16 and West Virginia Route 39 north of Gauley Bridge.
Document 9: 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 10: Interstate 77 in West Virginia: Interstate 77 Route information Maintained by West Virginia Division of Highways and West Virginia Parkways Authority Length 187.21 mi (301.29 km) Existed November 8, 1954 -- present Major junctions South end I - 77 / US 52 at Virginia state line US 460 near Princeton I ‐ 64 from Beckley to Charleston WV 16 / WV 97 at Beckley US 19 near Beckley US 60 at Charleston I ‐ 79 near Charleston US 33 from Ripley to Ravenswood WV 2 from Ravenswood to Parkersburg US 50 at Parkersburg North end I - 77 at Ohio state line Highway system Interstate Highway System Main Auxiliary Suffixed Business Future West Virginia State Highway System Interstate US State ← WV 76 WV 78 →
Document 11: 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 12: West Virginia Route 76: West Virginia Route 76 is an east–west state highway in northern West Virginia. The western terminus of the route is at U.S. Route 50 in the shadow of Bridgeport's Benedum Airport. The eastern terminus is at U.S. Route 119 and U.S. Route 250 three miles (5 km) north of Philippi.
Document 13: 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 14: Coe, West Virginia: Coe is an unincorporated community in Nicholas County, West Virginia, United States. Coe is located on County Route 7/6 east of Craigsville.
Document 15: 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.
ground_truth: U.S.
sub_queries: Poe >> located in the administrative territorial entity Answer: Nicholas County
Nicholas County >> shares border with Answer: Greenbrier County
Alta, Greenbrier County , West Virginia >> country Answer: U.S.