Information: - A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is used in the United States, Canada, Romania, China and Taiwan. In the United Kingdom and Ireland, county towns have a similar function. - Hydrogen is a chemical element with chemical symbolH and atomic number1. With an atomic weight of , hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Non-remnant stars are mainly composed of hydrogen in the plasma state. The most common isotope of hydrogen, termed "protium" (name rarely used, symbol H), has one proton and no neutrons. - Kentucky, officially the Commonwealth of Kentucky, is a state located in the east south-central region of the United States. 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. - A U.S. state is a constituent political entity of the United States of America. There are 50 states, which are bound together in a union with each other. Each state holds administrative jurisdiction over a defined geographic territory, and shares its sovereignty with the United States federal government. Due to the shared sovereignty between each state and the federal government, Americans are citizens of both the federal republic and of the state in which they reside. State citizenship and residency are flexible, and no government approval is required to move between states, except for persons covered by certain types of court orders (e.g., paroled convicts and children of divorced spouses who are sharing custody). - Appalachia is a cultural region in the Eastern United States that stretches from the Southern Tier of New York to northern Alabama, Mississippi and Georgia. While the Appalachian Mountains stretch from Belle Isle (Newfoundland and Labrador) in Canada to Cheaha Mountain in Alabama, the cultural region of Appalachia typically refers only to the central and southern portions of the range. As of the 2010 United States Census, the region was home to approximately 25 million people. - Appalshop is a media, arts, and education center located in Whitesburg, Kentucky, in the heart of the southern Appalachian region of the United States. - Oxygen is a chemical element with symbolO and atomic number8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetal and oxidizing agent that readily forms oxides with most elements as well as other compounds. By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula . This is an important part of the atmosphere and diatomic oxygen gas constitutes 20.8% of the Earth's atmosphere. Additionally, as oxides the element makes up almost half of the Earth's crust. - Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle in place. The particles that form a sedimentary rock by accumulating are called sediment. Before being deposited, the sediment was formed by weathering and erosion from the source area, and then transported to the place of deposition by water, wind, ice, mass movement or glaciers, which are called agents of denudation. Sedimentation may also occur as minerals precipitate from water solution or shells of aquatic creatures settle out of suspension. - Martin County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 12,929. Its county seat is Inez. The county was founded in 1870 and is named for Congressman John Preston Martin. It is a prohibition or dry county, which means that alcohol sales are prohibited in all areas of the county. - Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon, along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. A fossil fuel, coal forms when dead plant matter is converted into peat, which in turn is converted into lignite, then sub-bituminous coal, after that bituminous coal, and lastly anthracite. This involves biological and geological processes that take place over time. - John Preston Martin (October 11, 1811 December 23, 1862) was a political figure in Kentucky in the early 19th century. He was born on October 11, 1811 near Jonesville, Lee County, Virginia. He moved to Prestonsburg, Floyd County, Kentucky in 1828. He served in the State House of Representatives from 1841 through 1843. - Whitesburg is a city in and the county seat of Letcher County, Kentucky, United States. The population was 2,139 at the 2010 census. It was named for C. White, a state politician. - Sludge is a 2005 documentary film by Appalshop filmmaker Robert Salyer chronicling the Martin County Sludge Spill that was an accident that occurred after midnight on October 11 , 2000 when a coal sludge impoundment in Martin County , Kentucky , broke through an underground mine below , propelling 306 million gallons of sludge down two tributaries of the Tug Fork River . The movie documents the continuing story of the Martin County disaster , the resulting federal investigation , and the looming threat of coal sludge ponds throughout the coalfield region . In the United States today , coal is the largest single source of fuel for energy production . Annually , the country mines over a billion tons of coal . Coal waste is a consequence of this consumption ; the Mine Safety and Health Administration has estimated that there are over 235 sludge ponds throughout the region with the potential to break into an underground mine , as the Martin County pond did in 2000 . In the wake of the December 2008 release of coal ash at a Tennessee Valley Authority power plant , Appalshop provided a web stream of Sludge for the public for a limited time . After reading the paragraphs above, choose the best answer for the entity that related to 'sludge ' with the relationship of 'narrative location'. Choices: - alabama - appalachian mountains - canada - earth - ireland - kentucky - massachusetts - new york - united kingdom - united states of america - universe - virginia
appalachian mountains