Information: - Russia (from the Rus'), also officially known as the Russian Federation, is a country in Eurasia. At , Russia is the largest country in the world by surface area, covering more than one-eighth of the Earth's inhabited land area, and the ninth most populous, with over 140million people at the end of March 2016. The European western part of the country is much more populated and urbanised than the eastern, about 77% of the population live in European Russia. Russia's capital Moscow is one of the largest cities in the world, other major urban centers include Saint Petersburg, Novosibirsk, Yekaterinburg, Nizhny Novgorod and Samara. - Fennoscandia , Fenno-Scandinavia, or the Fennoscandian Peninsula, is the geographical peninsula of the Nordic region comprising the Scandinavian Peninsula, Finland, Karelia, and the Kola Peninsula. It encompasses Finland, Norway and Sweden, as well as Murmansk Oblast, much of the Republic of Karelia and parts of northern Leningrad Oblast in Russia. Its name comes from the Latin words "Fennia" (Finland) and "Scandia" (Scandinavian). The term was first used by the Finnish geologist Wilhelm Ramsay in 1898. Geologically, the area is distinct because its bedrock is Archaean granite and gneiss with very little limestone, in contrast to neighboring areas in Europe. - Rapid transit, also known as heavy rail, metro, subway, tube, or underground, is a type of high-capacity public transport generally found in urban areas. Unlike buses or trams, rapid transit systems are electric railways that operate on an exclusive right-of-way, which cannot be accessed by pedestrians or other vehicles of any sort, and which is often grade separated in tunnels or on elevated railways. - The Helsinki tram network forms part of the Helsinki public transport system organised by Helsinki Regional Transport Authority and operated by Helsinki City Transport (Finnish: Helsingin kaupungin liikenne, Swedish: Helsingfors stads trafikverk) in the Finnish capital city of Helsinki. The trams are the main means of transport in the city centre. 56.7 million trips were made in 2013. The Helsinki system is one of the oldest electrified tram networks in the world. - Stockholm (or ) is the capital of Sweden and the most populous city in the Nordic countries; 932,917 people live in the municipality, approximately 1.5 million in the urban area, and 2.3 million in the metropolitan area. The city is spread across 14 islands on the coast in the southeast of Sweden at the mouth of Lake Malaren, by the Stockholm archipelago and the Baltic Sea. The area has been settled since the Stone Age, in the 6th millennium BC, and was founded as a city in 1252 by a Swedish statesman Birger Jarl. It is also the capital of Stockholm County. - A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. - A sovereign state is, in international law, a nonphysical juridical entity that is represented by one centralised government that has sovereignty over a geographic area. International law defines sovereign states as having a permanent population, defined territory, one government, and the capacity to enter into relations with other sovereign states. It is also normally understood that a sovereign state is neither dependent on nor subjected to any other power or state. - An urban area is a human settlement with high population density and infrastructure of built environment. Urban areas are created through urbanization and are categorized by urban morphology as cities, towns, conurbations or suburbs. In urbanism, the term contrasts to rural areas such as villages and hamlets and in urban sociology or urban anthropology it contrasts with natural environment. The creation of early predecessors of urban areas during the urban revolution led to the creation of human civilization with modern urban planning, which along with other human activities such as exploitation of natural resources leads to human impact on the environment. - Helsinki City Transport or HKL (Finnish: "Helsingin kaupungin liikennelaitos", Swedish: "Helsingfors stads trafikverk", abbreviated "HST") is the official city-owned public transport company in Helsinki, Finland. It operates the Helsinki metro, Helsinki tram and ferry boat traffic. Its bus operations were merged with another city-owned company, Suomen Turistiauto, to form a new bus company called Helsingin Bussiliikenne. Until the beginning January 2000, HKL was responsible for planning and organising all public transport in Helsinki. After that date Helsingin seudun liikenne (HSL) took over these responsibilities. - Tallinn (or ) is the capital and largest city of Estonia. It is situated on the northern coast of the country, on the shore of the Gulf of Finland, south of Helsinki, east of Stockholm and west of Saint Petersburg. From the 13th century until 1918 (and briefly during the Nazi occupation of Estonia from 1941 to 1944), the city was known as Reval. Tallinn occupies an area of and has a population of 443,894. Approximately 32% of Estonia's total population lives in Tallinn. - 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 Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland (to the north) and Estonia (to the south) all the way to Saint Petersburg in Russia, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbours are located farthest in, near Saint Petersburg (including Primorsk). As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. - 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 Oresund. 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. - A tram (also known as tramcar; and in North America known as streetcar, trolley or trolley car) is a rail vehicle which runs on tracks along public urban streets, and also sometimes on a segregated right of way. The lines or networks operated by tramcars are called tramways. Tramways powered by electricity, the most common type historically, were once called electric street railways (mainly in the USA). However, trams were widely used in urban areas before the universal adoption of electrification; other methods of powering trams are listed below under "History". - Uusimaa or Nyland (both names mean new land) is a region in Finland. It borders the regions Southwest Finland, Tavastia Proper, Paijanne Tavastia and Kymenlaakso. Finlands capital Helsinki (its largest city) and its second largest city Espoo are both located centrally in Uusimaa, making it by far the most populous region. - Norway (; Norwegian: (Bokmal) 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: Jamtland, Harjedalen and Bohuslan. - An elevated railway (also known as El rail or simply El for short, and, in Europe, as overhead railway) is a rapid transit railway with the tracks above street level on a viaduct or other elevated structure (usually constructed of steel, concrete, or brick). The railway may be standard gauge, narrow gauge, light rail, monorail, or a suspension railway. Elevated railways are usually used in urban areas where there would otherwise be a large number of level crossings. Most of the time, the tracks of elevated railways that run on steel viaducts can be seen from street level. - 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. - The Helsinki Metro ( Finnish : Helsingin metro , Swedish : Helsingfors metro ) , is a rapid transit system serving Helsinki , Finland . It is the world 's most northern metro system , and the only one in Finland . The system was opened to the general public on 2 August 1982 after 27 years of planning . It is operated by Helsinki City Transport ( HKL ) for Helsinki Regional Transport Authority ( HSL ) and carries 62 million passengers per year . The system 's 17 stations , of which 9 are underground , make up a single forked line along a total length of 21.1 kilometres ( 13.1 mi ) . The metro serves as the predominant rail link between the suburbs of East Helsinki and the city centre . The upcoming Lansimetro extension will continue the line through western Helsinki and the southern parts of the neighbouring city of Espoo , as of 10/2015 served by buses only . The line passes under Helsinki Central railway station allowing passengers to transfer to and from the Helsinki commuter rail network including trains on the Ring Rail Line to Helsinki Airport . - 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. - Saint Petersburg is Russia's second-largest city after Moscow, with fivemillion inhabitants in 2012, and an important Russian port on the Baltic Sea. It is politically incorporated as a federal subject (a federal city). Situated on the Neva River, at the head of the Gulf of Finland on the Baltic Sea, it was founded by Tsar Peter the Great on May . In 1914, the name was changed from Saint Petersburg to Petrograd, in 1924 to Leningrad, and in 1991 back to Saint Petersburg. Between 17131728 and 17321918, Saint Petersburg was the imperial capital of Russia. In 1918, the central government bodies moved to Moscow. - A bus (archaically also omnibus, multibus, motorbus, autobus) is a road vehicle designed to carry many passengers. Buses can have a capacity as high as 300 passengers. The most common type of bus is the single-decker rigid bus, with larger loads carried by double-decker and articulated buses, and smaller loads carried by midibuses and minibuses; coaches are used for longer-distance services. Many types of buses, such as city transit buses and inter-city coaches, charge a fare. Other types, such as elementary or secondary school buses or shuttle buses within a post-secondary education campus do not charge a fare. In many jurisdictions, bus drivers require a special licence above and beyond a regular driver's licence. - The Gulf of Bothnia is the northernmost arm of the Baltic Sea. It is situated between Finland's west coast and Sweden's east coast. In the south of the gulf lie the Aland Islands, between the Sea of Aland and the Archipelago Sea. - 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. - Helsinki is the capital and largest city of Finland. It is in the region of Uusimaa, in southern Finland, on the shore of the Gulf of Finland. Helsinki has a population of , an urban population of 1,214,210, and a metropolitan population of over 1.4 million, making it the most populous municipality and urban area in Finland. Helsinki is located some north of Tallinn, Estonia, east of Stockholm, Sweden, and west of Saint Petersburg, Russia. Helsinki has close historical connections with these three cities. - A boat is a watercraft of a large range of sizes designed to float, plane, work or travel on water. Small boats are typically found on inland waterways (e.g., rivers and lakes) or in protected coastal areas. However, boats such as the whaleboat were designed for operation from a ship in an offshore environment. In naval terms, a boat is a vessel small enough to be carried aboard another vessel (a ship). Another less restrictive definition is a vessel that can be lifted out of the water. Some definitions do not make a distinction in size, as bulk freighters long on the Great Lakes are called oreboats. For reasons of naval tradition, submarines are usually referred to as 'boats' rather than 'ships', regardless of their size and shape. Ships are generally distinguished from boats based on their larger size, shape and cargo or passenger capacity. What object entity has the relation of 'part of' with the subject 'helsinki metro'? Choices: - 1914 - agriculture - antarctic - arm - boat - cargo - city - country - earth - education - eurasia - europe - european russia - european union - federation - germanic languages - government - gulf of bothnia - gulf of finland - head - helsinki - helsinki metro - history - human settlement - harjedalen - infrastructure - international law - islands - january - jamtland - karelia - legislation - march - may - monarchy - municipality - name - north america - norwegian - part - peter i island - population - public transport in helsinki - queen - road - russian - sea - settlement - ship - sovereign state - state - system - the republic - transport - vehicle - work
Answer:
public transport in helsinki