Question: What is the capital of a state that includes the Devonian Foreknobs Formation?

full_context: Document 1: Charleston, West Virginia: Charleston is the capital and the largest city in the U.S. state of West Virginia, and the county seat of Kanawha County. It is located at the confluence of the Elk and Kanawha Rivers in Kanawha County. As of the 2013 Census Estimate, it had a population of 50,821, while its metropolitan area had 224,743. It is a center of government, commerce, and industry.
Document 2: Bowland Shale Formation: The Bowland Shale Formation is a Carboniferous geological formation of Asbian (Visean) to Yeadonian (Bashkirian) age. It is known from outcrop and subsurface borehole data in the north of England, the Isle of Man, parts of North Wales and the Midlands. It is an organic-rich shale which, according to the British Geological Survey, is the source rock where "oil and gas matured before migration to conventional fields in the East Midlands and the Irish Sea", for example, the Formby oil field.
Document 3: Morgantown, West Virginia: Morgantown is a city in and the county seat of Monongalia County, West Virginia, situated along the banks of the Monongahela River. With a permanent population of 31,073 per the 2015 U.S. Census estimates, Morgantown is the largest city in North-Central West Virginia. The Morgantown metropolitan area has a population of 138,176, and is the 3rd largest in West Virginia. West Virginia University adds several thousand seasonal residents to the city and surrounding area from September through May. Morgantown is best known as the home of West Virginia University and the Morgantown Personal Rapid Transit system.
Document 4: Western North Carolina: Western North Carolina (often abbreviated as WNC) is the region of North Carolina which includes the Appalachian Mountains, thus it is often known geographically as the state's Mountain Region. It contains the highest mountains in the Eastern United States. Western North Carolina is sometimes included with upstate South Carolina as the "Western Carolinas", which is also counted as a single media market. The region covers an area of about 11000 sqmi , and is roughly the size of the state of Massachusetts. The population of the region, as measured by the 2010 U.S. Census, is 1,473,241, which is approximately 15% of North Carolina's total population.
Document 5: West Virginia: West Virginia is a state located in the Appalachian region of the Southern United States. It is bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the north (and, slightly, east), and Maryland to the northeast. West Virginia is the 10th smallest by area, is ranked 38th in population, and has the second lowest household income of the 50 United States. The capital and largest city is Charleston.
Document 6: Chattanooga Shale: The Chattanooga Shale is a geologic formation in Kentucky, Missouri and Tennessee. It preserves conodont fossils dating to the Devonian Period. It occurs mostly as a subsurface geologic formation composed of layers of shale. It is located in Eastern Tennessee and also extends into southeastern Kentucky, northeastern Georgia, and northern Alabama. This part of Alabama is part of the Black Warrior Basin.
Document 7: Clinton Group: The Clinton Group (also referred to as the Clinton Formation or the Clinton Shale) is a mapped unit of sedimentary rock found throughout eastern North America. The interval was first defined by the geologist Lardner Vanuxem, who derived the name from the village of Clinton in Oneida County, New York where several well exposed outcrops of these strata can be found. The Clinton Group and its lateral equivalents extend throughout much of the Appalachian Foreland Basin, a major structural and depositional province extending from New York to Alabama. The term has been employed in Kentucky, Maryland, Michigan, New York, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia, though in many of these areas the same interval is referred to as the Rose Hill, Rockwood, or Red Mountain Formations. Historically the term "Clinton" has also been assigned to several lower Silurian stratigraphic units in Ohio and Kentucky which are now known to be significantly older than the Clinton Group as it was originally defined. Many parts of this succession are richly fossiliferous, making the Clinton Group an important record of marine life during the early Silurian. Several economically valuable rock-types are found within this interval, though it is perhaps best known as a significant source of iron ore
Document 8: Appalachian Ohio: Appalachian Ohio is a bioregion and political unit in the southeastern part of the U.S. state of Ohio, characterized by the western foothills of the Appalachian Mountains and Appalachian Plateau. The Appalachian Regional Commission defines the region as consisting of thirty-two counties. This region roughly overlaps with the Appalachian mixed-mesophytic forests, which begin in southeast Ohio and southwest Pennsylvania and continue to north Georgia and Alabama. The mixed-mesophytic forest is found only in Central and Southern Appalachia and eastern/central China. It is one of the most biodiverse temperate forests in the world.
Document 9: Foreknobs Formation: The Devonian Foreknobs Formation is a mapped bedrock unit in Pennsylvania, Maryland, Virginia, and West Virginia.
Document 10: Kentucky: Kentucky ( , ), officially the Commonwealth of Kentucky, is a state located in the east south-central region of the United States. Although styled as the "State of Kentucky" in the law creating it, Kentucky is one of four U.S. states constituted as a commonwealth (the others being Virginia, Pennsylvania, and Massachusetts). Originally a part of Virginia, in 1792 Kentucky became the 15th state to join the Union. Kentucky is the 37th most extensive and the 26th most populous of the 50 United States.
Document 11: Charleston, West Virginia metropolitan area: The Charleston Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of three counties in West Virginia, anchored by the city of Charleston. It is the largest metropolitan area entirely within the state of West Virginia. While the Huntington Metro Area is more populous, it spans three states (West Virginia, Kentucky, and Ohio), and the core county of the Charleston area, Kanawha County, is more populous than the West Virginia portion of the Huntington area.
Document 12: Becraft Formation: The Becraft Formation is a geologic formation of marine sedimentary rock found in New York State. The Becraft is a part of the lower Devonian Helderberg Group and conformably overlies the New Scotland Formation and is overlain by the Alsen Formation throughout the lower Hudson Valley of New York State. The formation is Gedinnian in age. Outcrops of the formation are found from the New York-New Jersey border to the Helderbergs of Albany County, New York and as far west as Schoharie County, New York. The thickness of the formation varies from around 3 meters in Canajoharie to 8 meters thick in Albany and swells to 27 meters near Kingston. The Becraft Formation is named for Becraft Mountain in western Columbia County, New York where it prominently crops out.
Document 13: Muskeg Formation: The Muskeg Formation is a geologic formation of Middle Devonian (Givetian) age in the Western Canada Sedimentary Basin. It extends from the plains of northwestern Alberta to northeastern British Columbia, and includes important petroleum and natural gas reservoirs in the Zama lake and Rainbow Lake areas of northwestern Alberta.
Document 14: Martinsburg Formation: The Ordovician Martinsburg Formation (Om) is a mapped bedrock unit in Pennsylvania, New Jersey, Maryland, Virginia, and West Virginia. It is named for the town of Martinsburg, West Virginia for which it was first described. It is the dominant rock formation of the Great Appalachian Valley in New Jersey (where it is called Kittatinny Valley and Pennsylvania (in the Lehigh Valley and Lebanon Valley).
Document 15: West Virginia State Capitol: The West Virginia State Capitol is the seat of government for the U.S. state of West Virginia, and houses the West Virginia Legislature and the office of the Governor of West Virginia. Located in Charleston, West Virginia, the building was dedicated in 1932. Along with the West Virginia Executive Mansion it is part of the West Virginia Capitol Complex, a historic district listed on the National Register of Historic Places.
ground_truth: Charleston