Context: An oxide is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O atom. Metal oxides thus typically contain an anion of oxygen in the oxidation state of 2. Most of the Earth's crust consists of solid oxides, the result of elements being oxidized by the oxygen in air or in water. Hydrocarbon combustion affords the two principal carbon oxides: carbon monoxide and carbon dioxide. Even materials considered pure elements often develop an oxide coating. For example, aluminium foil develops a thin skin of AlO (called a passivation layer) that protects the foil from further corrosion. Individual elements can often form multiple oxides, each containing different amounts of the element and oxygen. In some cases these are distinguished by specifying the number of atoms as in carbon monoxide and carbon dioxide, and in other cases by specifying the element's oxidation number, as in iron(II) oxide and iron(III) oxide. Certain elements can form many different oxides, such those of nitrogen., Koskullskulle is a locality situated in Gällivare Municipality, Norrbotten County, Sweden with 874 inhabitants in 2010., Magnetite is a mineral and one of the main iron ores. With the chemical formula FeO, it is one of the oxides of iron. Magnetite is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. It is the most magnetic of all the naturally-occurring minerals on Earth. Naturally-magnetized pieces of magnetite, called lodestone, will attract small pieces of iron, which is how ancient peoples first discovered the property of magnetism. Today it is mined as iron ore., The polar night occurs when the night lasts for more than 24 hours. This occurs only inside the polar circles. The opposite phenomenon, the polar day, or midnight sun, occurs when the Sun stays above the horizon for more than 24 hours. "Night" is understood as the center of the Sun being below a free horizon. Since the atmosphere bends the rays of the Sun, the polar day is longer than the polar night, and the area that is affected by polar night is somewhat smaller than the area of midnight sun. The polar circle is located at a latitude between these two areas, at the latitude of approximately 66.5 degrees. In the most northern city of Sweden, Kiruna, at 67°51'N, the polar night lasts for around 28 twenty-four-hour periods, while the midnight sun lasts around 50 twenty-four-hour periods., Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (FeO), one of several iron oxides. Hematite crystallizes in the rhombohedral lattice system, and it has the same crystal structure as ilmenite and corundum. Hematite and ilmenite form a complete solid solution at temperatures above ., Sweden, officially the Kingdom of Sweden (Swedish: ), is a Scandinavian country in Northern Europe. It borders Norway to the west and Finland to the east, and is connected to Denmark in the southwest by a bridge-tunnel across the Öresund. At , Sweden is the third-largest country in the European Union by area, with a total population of 10.0 million. Sweden consequently has a low population density of , with the highest concentration in the southern half of the country. Approximately 85% of the population lives in urban areas., Luleå (Lule Sami "Luleju") is a city on the coast of northern Sweden, and the capital of Norrbotten County, the northernmost county in Sweden. Luleå has about 75,000 inhabitants and is the seat of Luleå Municipality (with a total population of 75,921)., Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron itself is usually found in the form of magnetite (72.4% Fe), hematite (69.9% Fe), goethite (62.9% Fe), limonite or siderite (48.2% Fe)., Luleå Municipality is a municipality in Norrbotten County in northern Sweden. Its seat is located in Luleå, which is also the county seat of Norrbotten County., Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Düsseldorf., The Main Line Through Upper Norrland is a long railway line between Bräcke, Jämtland County and Boden, Norrbotten County in Sweden. For military and regional policy reasons, it was built in very sparsely populated areas, far away from the more densely populated coast. The line has several branches to settlements on the coast, the ones to Umeå and Luleå being considered part of the line itself. Today the three largest settlements along the line are Boden (pop 18800), Älvsbyn (pop 5500) and Vännäs (pop 4100)., Iore, often stylized IORE, is a class of 34 electric locomotives built by Adtranz and its successor Bombardier Transportation for the Swedish mining company LKAB's railway division Malmtrafik. The class is a variation of Adtranz's Octeon modular product platform, thus related to Bombardier's later TRAXX platform. The locomotives haul iron ore freight trains on the Iron Ore Line and Ofoten Line in Sweden and Norway, respectively. The 68-car trains are hauled by two single-ended CoCo locomotives, each with a power output of . Each operates with tractive effort and has a maximum speed of . Delivery of the first series of 18 locomotives was made from 2000 to 2004, and they replaced some of the aging Dm3 and El 15 units. In 2007, eight more vehicles (4 double units) were ordered, with production to be completed by 2011, by which time, another four double units were ordered. These units are scheduled to be delivered from 2013 to 2014., Iron is a chemical element with symbol Fe (from ) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars, where it is the last element to be produced with release of energy before the violent collapse of a supernova, which scatters the iron into space., World War I (WWI or WW1), also known as the First World War, or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history. Over nine million combatants and seven million civilians died as a result of the war (including the victims of a number of genocides), a casualty rate exacerbated by the belligerents' technological and industrial sophistication, and the tactical stalemate caused by gruelling trench warfare. It was one of the deadliest conflicts in history, and paved the way for major political changes, including revolutions in many of the nations involved., A mineral is a naturally occurring chemical compound, usually of crystalline form and abiogenic in origin. A mineral has one specific chemical composition, whereas a rock can be an aggregate of different minerals or mineraloids. The study of minerals is called mineralogy., Northern or North Sami (disapproved exonym Lappish or Lapp), sometimes also simply referred to as Sami, is the most widely spoken of all Sami languages. The area where Northern Sami is spoken covers the northern parts of Norway, Sweden and Finland. The number of Northern Sami speakers is estimated to be somewhere between 15,000 and 25,000. About 2,000 of these live in Finland and between 5,000 and 6,000 in Sweden., The Sami people (also Sámi or Saami, traditionally known in English as Lapps or Laplanders) are an indigenous Finno-Ugric people inhabiting the Arctic area of Sápmi, which today encompasses parts of far northern Norway, Sweden, Finland, and the Kola Peninsula of Russia. The Sami are the only indigenous people of Scandinavia recognized and protected under the international conventions of indigenous peoples, and are hence the northernmost indigenous people of Europe. Sami ancestral lands are not well-defined. Their traditional languages are the Sami languages and are classified as a branch of the Uralic language family., Luossavaara-Kiirunavaara Aktiebolag (LKAB) is a Swedish mining company. The company mines iron ore at Kiruna and at Malmberget in northern Sweden. The company was established in 1890, and has been 100% state-owned since the 1950s. The iron ore is processed to pellets and sinter fines, which are transported by Iore trains (Malmbanan) to the harbours at Narvik and Luleå and to the steelmill at Luleå (SSAB). , Svappavaara is a locality situated in Kiruna Municipality, Norrbotten County, Sweden with 417 inhabitants in 2010. It is a mining village. Mining was started around 1650. Large scale iron mining started in 1965. The mine was closed in 1983, but enrichment of iron ore from the mine at Kiruna is still going on. The mine is owned by LKAB, and there is an ongoing project to open it again for production around year 2015., Narvik is located on the shores of the Ofotfjorden. The municipality is part of the traditional district of Ofoten of Northern Norway, inside the Arctic Circle. The municipality of Narvik borders the municipality of Ballangen to the southwest, Evenes to the northwest, Bardu, Gratangen, Lavangen and Skånland (in Troms county) to the north, and Norrbotten County (Lapland) in Sweden to the south and east., Limonite is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as FeO(OH)·nHO, although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the two principal iron ores, the other being hematite, and has been mined for the production of iron since at least 2500 BCE., The European Union (EU) is a political and economic union of member states that are located primarily in Europe. It has an area of , and an estimated population of over 510 million. The EU has developed an internal single market through a standardised system of laws that apply in all member states. EU policies aim to ensure the free movement of people, goods, services, and capital within the internal market, enact legislation in justice and home affairs, and maintain common policies on trade, agriculture, fisheries, and regional development. Within the Schengen Area, passport controls have been abolished. A monetary union was established in 1999 and came into full force in 2002, and is composed of 19 EU member states which use the euro currency., Goethite (FeO(OH)), named after the German polymath and poet Johann Wolfgang von Goethe (17491832), an iron bearing hydroxide mineral of the diaspore group, is found in soil and other low-temperature environments. Goethite has been well known since ancient times for its use as a pigment (brown ochre). Evidence has been found of its use in paint pigment samples taken from the caves of Lascaux in France. It was first described in 1806 based on samples found in the Hollertszug Mine in Herdorf, Germany., World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the world's nationsincluding all of the great powerseventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. In a state of "total war", the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. Marked by mass deaths of civilians, including the Holocaust (in which approximately 11 million people were killed) and the strategic bombing of industrial and population centres (in which approximately one million were killed, and which included the atomic bombings of Hiroshima and Nagasaki), it resulted in an estimated 50 million to 85 million fatalities. These made World War II the deadliest conflict in human history., Kiirunavaara ( Northern Sami : Gironvárri or Kierunavaara ) is a mountain in Kiruna , Sweden that contains one of the largest and richest bodies of iron ore in the world . The presence of iron in the area was known already in the mid- 17th century , but at this early time communication lines to this northerly region were quite insufficient to permit any major exploitation . Only with the construction of a railway , the Iron Ore Line and the ports of Narvik and Luleå at the end of the 19th century did commercial mining become a realistic proposition . The Swedish mining company LKAB ( Luossavaara - Kiirunavaara Aktiebolag ) has been mining the mountain since the beginning of the 20th century . The mining area around Kiruna and Malmberget and the iron port and steelworks at Luleå made Norrbotten County one of the first , and most prominent , regions of heavy industry in Sweden , and the wider region has remained at the forefront of mining and steel smelting and alloying technology ., Denmark is a Scandinavian country in Europe. The southernmost and smallest of the Nordic countries, it is south-west of Sweden and south of Norway, and bordered to the south by Germany. The Kingdom of Denmark is the sovereign state that comprises Denmark proper and two autonomous constituent countries in the North Atlantic Ocean: the Faroe Islands and Greenland. Denmark has a total area of , and a population of 5.7 million. The country consists of a peninsula, Jutland, and an archipelago of 443 named islands, with the largest being Zealand and Funen. The islands are characterised by flat, arable land and sandy coasts, low elevation and a temperate climate., SSAB AB, earlier "Svenskt Stål AB" (English: Swedish Steel), is a Swedish-Finnish company, formed in 1978 and specialised in processing raw material to steel. The largest shareholders are Industrivärden and the Government of Finland., An ore is a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock. The ores are extracted from the earth through mining; they are then refined (often via smelting) to extract the valuable element, or elements., A metal (from Greek  "métallon", "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has good electrical and thermal conductivity. Metals are generally malleable  that is, they can be hammered or pressed permanently out of shape without breaking or cracking  as well as fusible (able to be fused or melted) and ductile (able to be drawn out into a thin wire). About 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids. Some elements appear in both metallic and non-metallic forms., Luossavaara (Northern Sami: "Luossavárri") is a mountain in Kiruna, Sweden. It is the site of a now-inactive iron ore mine formerly operated by the Swedish mining company LKAB. Today it has a ski lift and slope, as well as a hiking path called "Midnattsolstigen" (the Midnight Sun Trail)., Iron oxides are chemical compounds composed of iron and oxygen. All together, there are sixteen known iron oxides and oxyhydroxides., Finland , officially the Republic of Finland, is a sovereign state in Northern Europe. A peninsula with the Gulf of Finland to the south and the Gulf of Bothnia to the west, the country has land borders with Sweden to the northwest, Norway to the north, and Russia to the east. Estonia is south of the country across the Gulf of Finland. Finland is a Nordic country situated in the geographical region of Fennoscandia, which also includes Scandinavia. Finland's population is 5.5 million (2014), staying roughly on the same level over the past two decades. The majority of the population is concentrated in the southern region. In terms of area, it is the eighth largest country in Europe and the most sparsely populated country in the European Union., The Ofoten Line is a railway line in Narvik, Norway. It runs from the Port of Narvik to Riksgränsen on the NorwaySweden border, where the line continues as the Ore Line via Kiruna and Gällivare to Luleå. The Ofoten Line is single track, electrified at and has seven stations. The line only connects to the rest of the Norwegian railway network via Sweden. The main traffic is up to twelve daily freight trains operated by Malmtrafik that haul iron ore from Sweden to Narvik. In addition, CargoNet operates container trains, branded as the Arctic Rail Express (ARE), and SJ operates passenger trains, including a night train to Stockholm. The Ofoten Line is also part of the Northern East West Freight Corridor, which hauls containers from China and India to North America., Scandinavia is a historical and cultural region in Northern Europe characterized by a common ethnocultural North Germanic heritage and mutually intelligible North Germanic languages., The city's vicinity shares a long history with the indigenous Sami people, with evidence of at least 6000 years of settlement. The city of Kiruna was founded in 1900 and quickly became a major centre of iron ore extraction and mining industry. During World War II, large quantities of iron were transported from Kiruna by rail to the east coast, and further down to be sold to Germany. Due to Kiruna's position north of the Arctic Circle the city experiences both midnight sun and polar night throughout the year as well as a very cold climate, even by Scandinavian standards., Siderite is a mineral composed of iron(II) carbonate (FeCO). It takes its name from the Greek word  "sideros," iron. It is a valuable iron mineral, since it is 48% iron and contains no sulfur or phosphorus. Zinc, magnesium and manganese commonly substitute for the iron resulting in the siderite-smithsonite, siderite-magnesite and siderite-rhodochrosite solid solution series., Norway (; Norwegian: (Bokmål) or (Nynorsk); Sami: "Norgga"), officially the Kingdom of Norway, is a sovereign and unitary monarchy whose territory comprises the western portion of the Scandinavian Peninsula plus the island Jan Mayen and the archipelago of Svalbard. The Antarctic Peter I Island and the sub-Antarctic Bouvet Island are dependent territories and thus not considered part of the Kingdom. Norway also lays claim to a section of Antarctica known as Queen Maud Land. Until 1814, the Kingdom included the Faroe Islands (since 1035), Greenland (1261), and Iceland (1262). It also included Shetland and Orkney until 1468. It also included the following provinces, now in Sweden: Jämtland, Härjedalen and Bohuslän., Northern Europe is the northern part or region of Europe. Although no definitive borders or definition exists for the term, geographically, Northern Europe may be considered to consist approximately of all of Europe above the 52nd parallel north; which includes (from west to east) most or all of: Iceland, the Republic of Ireland, the Isle of Man, the United Kingdom, the Faroe Islands, the Netherlands, northern Germany, Denmark, Norway, Sweden, northern Poland, Finland, Estonia, Latvia, Lithuania and northwest Russia. However, narrower definitions may also be used based on other geographical factors, such as climate and ecology. Greenland, geographically a part of North America, is politically a part of the Kingdom of Denmark, and may be included depending on the definition., Sami is a group of Uralic languages spoken by the Sami people in Northern Europe (in parts of northern Finland, Norway, Sweden and extreme northwestern Russia). There are, depending on the nature and terms of division, ten or more Sami languages. Several names are used for the Sami languages: "Saami", "Sámi", "Saame", "Samic", "kukhulas", as well as the exonyms "Lappish" and "Lappic". The last two, along with the term "Lapp", are now often considered derogatory., Gällivare (or ) is a locality and the seat of Gällivare Municipality in Norrbotten County, province of Lapland, Sweden with 8,449 inhabitants in 2010. The town was founded in the 17th century. Together with nearby towns Malmberget and Koskullskulle it forms a conurbation with some 15,000 inhabitants. This conurbation is the second northernmost significant urban area of Sweden after Kiruna., The midnight sun is a natural phenomenon that occurs in the summer months in places north of the Arctic Circle or south of the Antarctic Circle, when the sun remains visible at the local midnight. Around the summer solstice (approximately 21 June in the Northern Hemisphere and 22 December in the Southern Hemisphere) the sun is visible for the full 24 hours, given fair weather. The number of days per year with potential midnight sun increases the farther towards either pole one goes. Although approximately defined by the polar circles, in practice the midnight sun can be seen as much as 55 miles (90 km) outside the polar circle, as described below, and the exact latitudes of the farthest reaches of midnight sun depend on topography and vary slightly year-to-year., Malmberget ("The Ore Mountain") is a locality and mining town situated in Gällivare Municipality, Norrbotten County, Sweden with 5,590 inhabitants in 2010. It is situated 5 kilometres from the municipal seat Gällivare., The Iron Ore Line is a long railway line between Riksgränsen and Boden in Norrbotten County, Sweden. The line contains two branches, from Kiruna to Svappavaara and from Gällivare to Koskullskulle. The term is often colloquially used to also include the Ofoten Line, from Riksgränsen to Narvik in Norway, and the northernmost part of the Main Line Through Upper Norrland from Boden to Luleå. The railway from Narvik to Luleå is long., Norrbotten County ("Norrbottens län") is the northernmost county or "län" of Sweden. It borders Västerbotten County to the southwest, the Gulf of Bothnia to the southeast. It also borders the counties of Nordland and Troms in Norway to the northwest, and Lapland Province in Finland to the northeast. , Aktiebolag ("stock company") is the Swedish term for "limited company" or "corporation". When used in company names, it is abbreviated AB (in Sweden), Ab (in Finland), or A/B (for some older companies), roughly equivalent to the abbreviations "Ltd" and "PLC". The State authority responsible for registration of aktiebolag in Sweden is called the Swedish Companies Registration Office., Riksgränsen, "The National Border" in Swedish, is a ski-resort in Kiruna Municipality, Lappland, Sweden, 200 km north of the Arctic Circle. The skiing season is from February to June. From end of May the lifts operate under the midnight sun., Subject: kiirunavaara, Relation: located_in_the_administrative_territorial_entity, Options: (A) antarctica (B) atlantic ocean (C) center (D) central (E) centre (F) china (G) city of kiruna (H) cologne (I) denmark (J) district (K) düsseldorf (L) earth (M) estonia (N) eu (O) europe (P) european union (Q) faroe islands (R) finland (S) france (T) germany (U) gulf (V) gällivare municipality (W) hamburg (X) härjedalen (Y) ireland (Z) isle of man ([) jämtland (\) jämtland county (]) kiruna (^) kiruna municipality (_) lavangen (`) luleå (a) luleå municipality (b) most (c) mountain (d) narvik (e) norrbotten (f) norrbotten county (g) north (h) northern (i) northern norway (j) northwest (k) norway (l) of (m) ofoten (n) rock (o) scandinavia (p) seen (q) ski (r) south (s) southwest (t) stuttgart (u) sweden (v) troms (w) united kingdom (x) västerbotten (y) västerbotten county
Output: kiruna municipality