In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Example Input: Context: Punta del Este is a city and resort on the Atlantic Coast in the Maldonado Department of southeastern Uruguay. Although the city has a year-round population of about 9,280, the summer tourist boom adds to this a very large number of non-residents. Punta del Este is also the name of the municipality to which the city belongs. It includes Punta del Este proper and Península areas., The Maldonado Department, with an area of and 190,500 inhabitants, is located to the southeast of Uruguay. Its capital is Maldonado., An orchestra is a large instrumental ensemble typical of classical music, which features string instruments such as violin, viola, cello and double bass, as well as brass, woodwinds, and percussion instruments, grouped in sections. Other instruments such as the piano and celesta may sometimes appear in a fifth keyboard section or may stand alone, as may the concert harp and, for performances of some modern compositions, electronic instruments., Uruguay, officially the Oriental Republic of Uruguay, is a country in the southeastern region of South America. It borders Argentina to its west and Brazil to its north and east, with the Río de la Plata (River of Silver) to the south and with the Atlantic Ocean to the southeast. Uruguay is home to an estimated 3.42 million people, of whom 1.8 million live in the metropolitan area of its capital and largest city, Montevideo. With an area of approximately , Uruguay is geographically the second-smallest nation in South America, only larger in size than Suriname., Classical music is art music produced or rooted in the traditions of Western music, including both liturgical (religious) and secular music. While a more accurate term is also used to refer to the period from 1750 to 1820 (the Classical period), this article is about the broad span of time from roughly the 11th century to the present day, which includes the Classical period and various other periods. The central norms of this tradition became codified between 1550 and 1900, which is known as the common-practice period. The major time divisions of Western art music are as follows: 
European art music is largely distinguished from many other non-European and some popular musical forms by its system of staff notation, in use since about the 16th century. Western staff notation is used by composers to indicate to the performer the pitches (e.g., melodies, basslines, chords), tempo, meter and rhythms for a piece of music. This can leave less room for practices such as improvisation and "ad libitum" ornamentation, which are frequently heard in non-European art music and in popular-music styles such as jazz and blues. Another difference is that whereas most popular styles adopt the song (strophic) form, classical music has been noted for its development of highly sophisticated forms of instrumental music such as the concerto, symphony, sonata, and mixed vocal and instrumental styles such as opera which, since they are written down, can sustain larger forms and attain a high level of complexity., Suite Punta del Este is a tango nuevo work for orchestral strings and a bandoneón written by the Argentine composer Ástor Piazzolla in 1982 . Punta del Este is an Uruguayan resort where the artist spent many summers and particularly enjoyed shark fishing . It is broken into 3 movements : I. Introduccion : Allegro pesante II. Coral : Adagio III. Fuga : Allegro vivace . Suite Punta Del Este is a scored for bandoneon ( accordion ) , flute , oboe , clarinet , bassoon and strings . It has been used as a signature theme for the 1995 science fiction film 12 Monkeys as well as a model for music in a scene in The Simpsons episode `` Yokel Chords '' ., Subject: suite punta del este, Relation: instance_of, Options: (A) 1 (B) area (C) city (D) coast (E) country (F) del (G) department (H) metropolitan (I) metropolitan area (J) municipality (K) ocean (L) population (M) region (N) republic (O) resort (P) river (Q) song (R) year
Example Output: song

Example Input: Context: The Andaman and Nicobar Islands, one of the seven union territories of India, are a group of islands at the juncture of the Bay of Bengal and Andaman Sea., Indonesia (or ; Indonesian: ), officially the Republic of Indonesia, is a unitary sovereign state and transcontinental country located mainly in Southeast Asia with some territories in Oceania. Situated between the Indian and Pacific oceans, it is the world's largest island country, with more than seventeen thousand islands. At , Indonesia is the world's 14th-largest country in terms of land area and world's 7th-largest country in terms of combined sea and land area. It has an estimated population of over 260 million people and is the world's fourth most populous country, the most populous Austronesian nation, as well as the most populous Muslim-majority country. The world's most populous island of Java contains more than half of the country's population., Balasore or Baleshwar is a city in the state of Odisha, about north of the State capital Bhubaneswar, in eastern India. It is the administrative headquarters of Balasore district. It is best known for Chandipur beach. It is also the site of the Indian Ballistic Missile Defense Program's Integrated Test Range, located 18 km. south of Balasore. The Defence Research and Development Organisation developed many different missiles such as "Nag", Brahmos, Agni Missile among others here.This is where famous freedom fighter Jatindranath Mukherjee also known as Bagha Jatin got injured and died fighting the British. The spoken language in Balasore is Odia., A municipality is usually a single urban administrative division having corporate status and powers of self-government or jurisdiction as granted by national and state laws, to which it is subordinate. It is to be distinguished from the county, which may encompass rural territory and/or numerous small communities such as towns, villages and hamlets. The term "municipality" may also mean the governing or ruling body of a given municipality. A municipality is a general-purpose administrative subdivision, as opposed to a special-purpose district. The term is derived from French "municipalité" and Latin "municipalis"., India, officially the Republic of India ("Bhrat Gaarjya"), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country (with over 1.2 billion people), and the most populous democracy in the world. It is bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast. It shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Myanmar (Burma) and Bangladesh to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives. India's Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia. Its capital is New Delhi; other metropolises include Mumbai, Kolkata, Chennai, Bangalore, Hyderabad and Ahmedabad., China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower., Malkangiri() is a town and a Notified Area Council (NAC) in Malkangiri district in the Indian state of Odisha. It is the headquarters of the Malkangiri district. Malkangiri is the new home of the Bangladeshi refugees, who were rehabilitated since 1965 under the Dandakaranya Project. Also some Sri Lankan Tamil refugees were rehabilitated in Malkangiri town, following the armed struggle of LTTE in the early 1990s (most of them have returned, baring a couple of house holds). Currently it is one of the most naxalite-affected areas of the state and is a part of the Red Corridor., Mumbai (also known as Bombay, the official name until 1995) is the capital city of the Indian state of Maharashtra. It is the most populous city in India and the ninth most populous agglomeration in the world, with an estimated city population of 18.4 million. Along with the neighbouring regions of the Mumbai Metropolitan Region, it is one of the most populous urban regions in the world and the second most populous metropolitan area in India, with a population of 20.7 million . Mumbai lies on the west coast of India and has a deep natural harbour. In 2009, Mumbai was named an alpha world city. It is also the wealthiest city in India, and has the highest GDP of any city in South, West, or Central Asia. Mumbai has the highest number of billionaires and millionaires among all cities in India. , -- Bhadrak District is an administrative district of Odisha state in eastern India ., Bhadrak is a city and a municipality in Bhadrak district in the state of Odisha, India., South Asia or Southern Asia is a term used to represent the southern region of the Asian continent, which comprises the sub-Himalayan SAARC countries and, for some authorities, adjoining countries to the west and east. Topographically, it is dominated by the Indian Plate, which rises above sea level as Nepal and northern parts of India situated south of the Himalayas and the Hindu Kush. South Asia is bounded on the south by the Indian Ocean and on land (clockwise, from west) by West Asia, Central Asia, East Asia, and Southeast Asia., The Bay of Bengal, the largest bay in the world, forms the northeastern part of the Indian Ocean. Roughly triangular, it is bordered mostly by India and Sri Lanka to the west, Bangladesh to the north, and Myanmar (Burma) and the Andaman and Nicobar Islands (India) to the east., West Bengal is an Indian state, located in East India on the Bay of Bengal. It is India's fourth-most populous state, with over 91 million inhabitants. It has a total area of , making it similar in size to Serbia. A part of the ethno-linguistic Bengal region, it borders Bangladesh in the east and Nepal and Bhutan in the north. It also has borders with five Indian states, including Odisha, Jharkhand, Bihar, Sikkim and Assam., Thailand (or  ), officially the Kingdom of Thailand, formerly known as Siam, is a country at the centre of the Indochinese peninsula in Southeast Asia. With a total area of approximately , Thailand is the world's 51st-largest country. It is the 20th-most-populous country in the world, with around 66 million people. The capital and largest city is Bangkok., Bangladesh ( , "The country of Bengal"), officially the People's Republic of Bangladesh (  "Gônôprôjatôntri Bangladesh"), is a country in South Asia. It shares land borders with India and Myanmar (Burma). Nepal, Bhutan and China are located near Bangladesh but do not share a border with it. The country's maritime territory in the Bay of Bengal is roughly equal to the size of its land area. Bangladesh is the world's eighth most populous country. Dhaka is its capital and largest city, followed by Chittagong which has the country's largest port., Bhutan ('), officially the Kingdom of Bhutan ('), is a landlocked country and the smallest state in Asia to be located entirely within the Himalaya mountain range. Located in the Eastern Himalayas, it is bordered by China in the north and India in the south. Bhutan lacks a border with nearby Nepal due to the Indian state of Sikkim and with Bangladesh due to the Indian states of West Bengal and Assam. Bhutan is geopolitically in South Asia and is the region's second least populous nation after the Maldives. Thimphu is its capital and largest city, while Phuntsholing is its financial center. , Chhattisgarh (literally 'Thirty-Six Forts') is a state in central India. It is the 10th largest state in India, with an area of . With a population of 28 million, Chhattisgarh is the 17th most-populated state of the nation. It is a source of electricity and steel for India, accounting for 15% of the total steel produced in the country. Chhattisgarh is one of the fastest-developing states in India., Telangana is one of the 29 states in India, located in southern India. Telangana has an area of , and a population of 35,193,978 (2011 census). making it the twelfth largest state in India, and the twelfth most populated state in India. Its major cities include Hyderabad, Warangal, Nizamabad, Khammam, Karimnagar and Ramagundam. Telangana is bordered by the states of Maharashtra to the north and north west, Chhattisgarh to the north, Karnataka to the west and Andhra Pradesh to the east and south., The Maldives (, or ), officially the Republic of Maldives (""), is a South Asian island country, located in the Indian Ocean. It lies southwest of India and Sri Lanka. The chain of twenty-six atolls stretches from Ihavandhippolhu Atoll in the north to the Addu City in the south. Comprising a territory spanning roughly , the Maldives is one of the world's most geographically dispersed countries, as well as the smallest Asian country by both land area and population, with a little over 393,500 inhabitants. Malé is the capital and most populated city, traditionally called the "King's Island" for its central location., Myanmar, officially the Republic of the Union of Myanmar and also known as Burma, is a sovereign state in South East Asia bordered by Bangladesh, India, China, Laos and Thailand. About one third of Myanmar's total perimeter of 5,876 km (3,651 miles), forms an uninterrupted coastline of 1,930 km (1,200 miles) along the Bay of Bengal and the Andaman Sea. The country's 2014 census revealed a much lower population than expected, with 51 million people recorded. Myanmar is 676,578 square kilometres (261,227 sq mi) in size. Its capital city is Naypyidaw and its largest city is Yangon (Rangoon)., Chennai ; formerly known as Madras or ) is the capital of the Indian state of Tamil Nadu. Located on the Coromandel Coast off the Bay of Bengal, it is one of the biggest cultural, economic and educational centres in South India. According to the 2011 Indian census, it is the sixth-largest city and fourth-most populous urban agglomeration in India. The city together with the adjoining regions constitute the Chennai Metropolitan Area, which is the 36th-largest urban area by population in the world. Chennai is among the most visited Indian cities by foreign tourists. It was ranked 43rd most visited city in the world for year 2015. The Quality of Living Survey rated Chennai as the safest city in India. Chennai attracts 45 percent of health tourists visiting India, and 30 to 40 percent of domestic health tourists. As such, it is termed "India's health capital". As a growing metropolitan city in a developing country, Chennai confronts substantial pollution and other logistical and socio-economic problems., Sri Lanka (or ; Sinhalese:   ', Tamil:  "Ilakai"), officially the Democratic Socialist Republic of Sri Lanka (formerly known as Ceylon), is an island country in South Asia near south-east India. Sri Lanka has maritime borders with India to the northwest and the Maldives to the southwest., Jharkhand ("Bushland") is a state in eastern India carved out of the southern part of Bihar on 15 November 2000. The state shares its border with the states of Bihar to the north, Uttar Pradesh to the north-west, Chhattisgarh to the west, Odisha to the south, and West Bengal to the east. It has an area of . The city of Ranchi is its capital while the industrial city of Jamshedpur is the most populous city of the state., Odisha(formerly Orissa) (() is one of the 29 states of India, located in the eastern coast. It is surrounded by the states of West Bengal to the north-east, Jharkhand to the north, Chhattisgarh to the west and north-west, Andhra Pradesh and Telangana to the south and south-west. Odisha has of coastline along the Bay of Bengal on its east, from Balasore to Malkangiri. It is the 9th largest state by area, and the 3rd largest by tribal population .Odia (formerly known as "Oriya") is the official and most widely spoken language, spoken by 33.2 million according to the 2001 Census., The Arabian Sea is a region of the northern Indian Ocean bounded on the north by Pakistan and Iran, on the west by northeastern Somalia and the Arabian Peninsula, and on the east by India. Historically the sea has been known by other names including the Erythraean Sea and the Persian Sea. Its total area is and its maximum depth is . The Gulf of Aden is in the southwest, connecting the Arabian Sea to the Red Sea through the strait of Bab-el-Mandeb, and the Gulf of Oman is in the northwest, connecting it to the Persian Gulf., Asia is Earth's largest and most populous continent, located primarily in the eastern and northern hemispheres and sharing the continental landmass of Eurasia with the continent of Europe. Asia covers an area of , about 30% of Earth's total land area and 8.7% of the Earth's total surface area. The continent, which has long been home to the majority of the human population, was the site of many of the first civilizations. Asia is notable for not only its overall large size and population, but also dense and large settlements as well as vast barely populated regions within the continent of 4.4 billion people., Ahmedabad (also known as Amdavad ) is the largest city and former capital of Gujarat, which is a state in India. It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court. With a population of more than 6.3 million and an extended population of 7.8 million, it is the sixth largest city and seventh largest metropolitan area of India. Ahmedabad is located on the banks of the Sabarmati River, from the state capital Gandhinagar, which is its twin city., Kolkata (, also known as Calcutta , the official name until 2001) is the capital of the Indian state of West Bengal. Located on the east bank of the Hooghly River, it is the principal commercial, cultural, and educational centre of East India, while the Port of Kolkata is India's oldest operating port and its sole major riverine port. In 2011, the city had population of 4.5 million, while the population of the city and its suburbs was 14.1 million, making it the third-most populous metropolitan area in India. In 2008 its gross domestic product (adjusted for purchasing power parity) was estimated to be 104 billion, which was the third highest among Indian cities, behind Mumbai and Delhi., The Indian Ocean is the third largest of the world's oceanic divisions, covering (approximately 20% of the water on the Earth's surface). It is bounded by Asia on the north, on the west by Africa, on the east by Australia, and on the south by the Southern Ocean or, depending on definition, by Antarctica. It is named after the country of India. The Indian Ocean is known as "Ratnkara", ""the mine of gems"" in ancient Sanskrit literature, and as "Hind Mahsgar", ""the great Indian sea"", in Hindi., Delhi (Dilli) , officially the National Capital Territory of Delhi, is a city and a union territory of India. It is bordered by Haryana on three sides and by Uttar Pradesh to the east. It is the most expansive city in Indiaabout . It has a population of about 25 million, making it the second most populous city after Mumbai and most populous urban agglomeration in India and 3 largest urban area in the world. Urban expansion in Delhi has caused it to grow beyond the NCT to incorporate towns in neighbouring states. At its largest extent, there is a population of about 25 million residents . According to data released by Oxford Economics, Delhi NCR urban agglomeration has replaced Mumbai Metropolitan Region urban agglomeration as the economic capital of India. However the comparison of the figures specific to the Metropolis of Delhi and Metropolis of Mumbai was not provided by this institution. These figures however did not match with those revealed by the reserve bank of India, The economic survey of India, The economic survey of Delhi and Maharashtra., Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked central Himalayan country in South Asia. It has a population of 26.4 million and is the 93rd largest country by area. Bordering China in the north and India in the south, east, and west, it is the largest sovereign Himalayan state. Nepal does not border Bangladesh, which is located within only 27 km (17 mi) of its southeastern tip. It neither borders Bhutan due to the Indian state of Sikkim being located in between. Nepal has a diverse geography, including fertile plains, subalpine forested hills, and eight of the world's ten tallest mountains, including Mount Everest, the highest point on Earth. Kathmandu is the nation's capital and largest city. It is a multiethnic nation with Nepali as the official language. , Andhra Pradesh() is one of the 29 states of India, situated on the southeastern coast of the country. The state is the eighth largest state in India covering an area of . As per 2011 Census of India, the state is tenth largest by population with 49,386,799 inhabitants., Democracy ("" literally "rule of the commoners"), in modern usage, is a system of government in which the citizens exercise power directly or elect representatives from among themselves to form a governing body, such as a parliament. Democracy is sometimes referred to as "rule of the majority". Democracy was originally conceived in Classical Greece, where political representatives were chosen by a jury from amongst the male citizens: rich and poor., Bengal (bgl; Bengali: ,  and ) is a region in Asia which is located in the eastern part of the Indian subcontinent at the apex of the Bay of Bengal. Geographically, it is made up by the Ganges-Brahmaputra delta system, the largest such formation in the world; along with mountains in its north (bordering the Himalayan states) and east (bordering Northeast India and Burma)., New Delhi is the capital of India and one of Delhi city's 11 districts., Pakistan (or ), officially the Islamic Republic of Pakistan, is a federal parliamentary republic in South Asia on crossroads of Central Asia and Western Asia. It is the sixth-most populous country with a population exceeding 200 million people. It is the 36th largest country in the world in terms of area with an area covering . Pakistan has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest and China in the far northeast respectively. It is separated from Tajikistan by Afghanistan's narrow Wakhan Corridor in the north, and also shares a maritime border with Oman., Hyderabad (; often ) is the capital of the southern Indian state of Telangana and "de jure" capital of Andhra Pradesh. Occupying along the banks of the Musi River, it has a population of about and a metropolitan population of about , making it the fourth most populous city and sixth most populous urban agglomeration in India. At an average altitude of , much of Hyderabad is situated on hilly terrain around artificial lakes, including Hussain Sagarpredating the city's foundingnorth of the city centre., Subject: bhadrak district, Relation: shares_border_with, Options: (A) ahmedabad district (B) andhra pradesh (C) arabian sea (D) as (E) asia (F) balasore district (G) bangkok (H) bangladesh (I) bay of bengal (J) beijing (K) bhutan (L) bihar (M) chennai (N) chhattisgarh (O) chongqing (P) delhi (Q) delta (R) east (S) guangzhou (T) gujarat (U) hong kong (V) india (W) indian ocean (X) indian plate (Y) indonesia (Z) jharkhand ([) karimnagar (\) lakes (]) lies (^) macau (_) maharashtra (`) malkangiri district (a) mumbai (b) myanmar (c) nepal (d) north west (e) northwest (f) odisha (g) oman (h) pakistan (i) port (j) ranchi (k) sagar (l) serbia (m) south (n) southern region (o) taiwan (p) tamil nadu (q) thailand (r) this (s) tianjin (t) uttar pradesh (u) wakhan (v) west (w) west bengal
Example Output: balasore district

Example Input: Context: Plutonium is a transuranic radioactive chemical element with symbol Pu and atomic number 94. It is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon and hydrogen. When exposed to moist air, it forms oxides and hydrides that can expand the sample up to 70% in volume, which in turn flake off as a powder that is pyrophoric. It is radioactive and can accumulate in bones, which makes the handling of plutonium dangerous., A scram or SCRAM is an emergency shutdown of a nuclear reactor , though the term has been extended to cover shutdowns of other complex operations , such as server farms . In commercial reactor operations , this emergency shutdown is often referred to as a `` SCRAM '' at boiling water reactors ( BWR ) , and as a `` reactor trip '' at pressurized water reactors ( PWR ) . In many cases , a SCRAM is part of the routine shutdown procedure as well . The term is usually cited as being an acronym for safety control rod axe man , which was supposedly coined by Enrico Fermi when the world 's first nuclear reactor was built under the spectator seating at the University of Chicago 's Stagg Field , but NRC Historian Tom Wellock calls the axe - man story `` a bunch of baloney . '' It could also stand for `` Safety Control Rods Activator Mechanism '' or `` Safety Control Rods Actuator Mechanism '' , both of which are probably backronyms . ' Scram ' is also a verbal command used to tell someone or something to leave quickly and urgently , although its similarity to the technical term is most likely coincidental ., District heating (also known as heat networks or teleheating) is a system for distributing heat generated in a centralized location for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels but increasingly also biomass, although heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as nuclear power. District heating plants can provide higher efficiencies and better pollution control than localized boilers. According to some research, district heating with combined heat and power (CHPDH) is the cheapest method of cutting carbon emissions, and has one of the lowest carbon footprints of all fossil generation plants. CHPDH is being developed in Denmark as a store for renewable energy, particularly wind energy, that exceeds instantaneous grid demand via the use of heat pumps and thermal stores., A propeller is a type of fan that transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and a fluid (such as air or water) is accelerated behind the blade. Propeller dynamics, like those of aircraft wings, can be modelled by either or both Bernoulli's principle and Newton's third law. A marine propeller of this type is sometimes colloquially known as a screw propeller or screw, however there is a different class of propellers known as cycloidal propellers - they are characterized by the higher propulsive efficiency averaging 0.72 compared to the screw propellers average of 0.6 and the ability to throw thrust in any direction at any time. Their disadvantages are higher mechanical complexity and higher cost., In nuclear physics and nuclear chemistry, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay., A nuclear chain reaction occurs when one single nuclear reaction causes an average of one or more subsequent nuclear reactions, thus leading to the possibility of a self-propagating series of these reactions. The specific nuclear reaction may be the fission of heavy isotopes (e.g., U). The nuclear chain reaction releases several million times more energy per reaction than any chemical reaction., A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Sir Charles Parsons in 1884., A weapons-grade substance is one that is pure enough to be used to make a nuclear weapon or has properties that make it particularly suitable for nuclear weapons use. Plutonium and uranium in grades normally used in nuclear weapons are the most common examples. (These nuclear materials have other categorizations based on their purity.), A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a sustained nuclear chain reaction. Nuclear reactors are used at nuclear power plants for electricity generation and in propulsion of ships. Heat from nuclear fission is passed to a working fluid (water or gas), which runs through steam turbines. These either drive a ship's propellers or turn electrical generators. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. Some are run only for research. Today there are about 450 nuclear power reactors that are used to generate electricity in about 30 countries around the world., A nuclear power plant or nuclear power station is a thermal power station in which the heat source is a nuclear reactor. As is typical in all conventional thermal power stations the heat is used to generate steam which drives a steam turbine connected to an electric generator which produces electricity. , the IAEA report there are 435 nuclear power reactors in operation operating in 31 countries. Nuclear power stations are usually considered to be base load stations, since fuel is a small part of the cost of production. Their operations and maintenance (O&M) and fuel costs are, along with hydropower stations, at the low end of the spectrum and make them suitable as base-load power suppliers. The cost of spent fuel management, however, is somewhat uncertain., Pressurized water reactors (PWRs) constitute the large majority of the world's nuclear power plants (notable exceptions being the United Kingdom, Japan and Canada) and are one of three types of light water reactor (LWR), the other types being boiling water reactors (BWRs) and supercritical water reactors (SCWRs). In a PWR, the primary coolant (water) is pumped under high pressure to the reactor core where it is heated by the energy released by the fission of atoms. The heated water then flows to a steam generator where it transfers its thermal energy to a secondary system where steam is generated and flows to turbines which, in turn, spin an electric generator. In contrast to a boiling water reactor, pressure in the primary coolant loop prevents the water from boiling within the reactor. All LWRs use ordinary water as both coolant and neutron moderator., Isotopes are variants of a particular chemical element which differ in neutron number. All isotopes of a given element have the same number of protons in each atom. The term isotope is formed from the Greek roots isos ( "equal") and topos ( "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table., A chain reaction is a sequence of reactions where a reactive product or by-product causes additional reactions to take place. In a chain reaction, positive feedback leads to a self-amplifying chain of events., The supercritical water reactor (SCWR) is a concept Generation IV reactor, mostly designed as light water reactor (LWR) that operates at supercritical pressure (i.e. greater than 22.1 MPa). The term "critical" in this context refers to the critical point of water, and must not be confused with the concept of criticality of the nuclear reactor., Subject: scram, Relation: instance_of, Options: (A) aircraft (B) atomic pile (C) base (D) chain (E) chemical element (F) class (G) coating (H) concept (I) cost (J) device (K) direction (L) district (M) electric generator (N) energy (O) fluid (P) gas (Q) grade (R) handling (S) hydrogen (T) industrial process (U) may (V) method (W) motion (X) nuclear power plant (Y) nuclear reactor (Z) nucleus ([) operation (\) physics (]) plant (^) position (_) power station (`) process (a) production (b) sequence (c) single (d) six (e) station (f) store (g) symbol (h) term (i) turbine (j) volume (k) water (l) weapon (m) work
Example Output:
concept