Context: Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is HO, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent bonds. Water strictly refers to the liquid state of that substance, that prevails at standard ambient temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also occurs in nature as snow, glaciers, ice packs and icebergs, clouds, fog, dew, aquifers, and atmospheric humidity., A pilot, also referred to as a marine pilot, maritime pilot, or harbor pilot is a mariner who manoeuvres ships through dangerous or congested waters, such as harbors or river mouths. He is normally an ex ship captain and a highly experienced shiphandler who possess detailed knowledge of the particular waterway, e.g. actual depth, direction and strength of the wind, current and tide at any time of the day., Ursholmen is a Swedish island and lighthouse located west of Strömstad town . It is the westernmost lighthouse in Sweden . In 1891 two identical lighthouses were built on the island to replace two lighthouses on Nordkoster . It was the first time in Sweden lighthouses were built in concrete . In 1931 the north tower was deactivated and its lantern room removed , but the tower remains . In 1965 the south tower was electrified and automated . In 2000 solar cells was installed and the electric cable removed . In 2008 the Swedish Maritime Administration handed ownership of the towers to the Naturvårdsverket which already owned all of the other buildings on the island . SMA did n't find the lighthouse important for the modern commercial shipping any more , but they paid an amount of money to Naturvårdsverket for restoration of the two towers . There is a very small lighthouse museum in a cabin on the island . The whole island is a nature reserve , a part of Kosterhavet national park ., Strömstad is a locality and the seat of Strömstad Municipality, Västra Götaland County, Sweden with 6,288 inhabitants in 2010., Västra Götaland County is a county or "län" on the western coast of Sweden. , 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., Strömstad Municipality ("Strömstads kommun") is a municipality in Västra Götaland County in western Sweden. Its seat is located in the city of Strömstad., A navigational aid (also known as aid to navigation, ATON, or navaid) is any sort of marker which aids the traveler in navigation; the term is most commonly used to refer to nautical or aviation travel. Common types of such aids include lighthouses, buoys, fog signals, and day beacons., An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. A grouping of geographically or geologically related islands is called an archipelago, e.g. the Philippines., Lake Island is an island on the coast of the Canadian province of British Columbia. It is located between Mathieson Channel and Lady Trutch Passage, and is flanked by Dowager Island (to the northwest), Lady Douglas Island (to the west), and a long finger shaped peninsula of the Canadian mainland to the east. Ironically, Lake Island is not a lake island, as it is in an inlet of the Pacific Ocean, and lies only some 6 kilometres from the open sea., A continent is one of several very large landmasses on Earth. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in size to smallest, they are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia. In geology, areas of continental crust include regions covered with water., A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses, and to serve as a navigational aid for maritime pilots at sea or on inland waterways., An islet is a very small island. Types. As suggested by its origin as "islette", an Old French diminutive of "isle", use of the term implies small size, but little attention is given to drawing an upper limit on its applicability., An archipelago, sometimes called an island group or island chain, is a chain, cluster or collection of islands. The word "archipelago" is derived from the Greek "-  arkhi-" ("chief") and "  pélagos" ("sea") through the Italian "arcipelago". In Italian, possibly following a tradition of antiquity, the Archipelago (from medieval Greek "*" and Latin "archipelagus") was the proper name for the Aegean Sea and, later, usage shifted to refer to the Aegean Islands (since the sea is remarkable for its large number of islands). It is now used to refer to any island group or, sometimes, to a sea containing a small number of scattered islands., A cay (or ), also spelled caye or key, is a small, low-elevation, sandy island on the surface of a coral reef. Cays occur in tropical environments throughout the Pacific, Atlantic and Indian Oceans (including in the Caribbean and on the Great Barrier Reef and Belize Barrier Reef)., The Philippines, officially the Republic of the Philippines, is a sovereign island country in Southeast Asia situated in the western Pacific Ocean. It consists of about 7,641 islands that are categorized broadly under three main geographical divisions from north to south: Luzon, Visayas, and Mindanao. The capital city of the Philippines is Manila and the most populous city is Quezon City, both part of Metro Manila. Bounded by the South China Sea on the west, the Philippine Sea on the east and the Celebes Sea on the southwest, the Philippines shares maritime borders with Taiwan to the north, Vietnam to the west, Palau to the east and Malaysia and Indonesia to the south., Subject: ursholmen, Relation: located_in_the_administrative_territorial_entity, Options: (A) africa (B) australia (C) belize (D) british columbia (E) caribbean (F) earth (G) europe (H) european union (I) lakes (J) manila (K) marker (L) northern (M) northwest (N) norway (O) of (P) palau (Q) philippines (R) quezon (S) quezon city (T) river (U) south (V) southwest (W) strömstad municipality (X) sweden (Y) time (Z) vietnam ([) västra götaland county (\) west
Output: strömstad municipality