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).

Ex Input:
Context: A chain gun is a type of machine gun or autocannon that uses an external source of power to cycle the weapon rather than diverting energy from the cartridge , and does so via a continuous loop of chain similar to that used on a motorcycle or bicycle . '' Chain gun '' is a registered trademark of Alliant Techsystems Inc. for a chain - powered weapon ., The word bullet is a firearm term. A bullet is a projectile expelled from the barrel of a firearm. The term is from Middle French and originated as the diminutive of the word boulle (boullet) which means "small ball." Bullets are made of a variety of materials. They are available singly as they would be used in muzzle loading and cap and ball firearms, as part of a paper cartridge, and much more commonly as a component of metallic cartridges. Bullets are made in a large numbers of styles and constructions depending on how they will be used. Many bullets have specialized functions, such as hunting, target shooting, training, defense, and warfare. , An autocannon or automatic cannon is a large, fully automatic, rapid-fire projectile weapon that fires armour-piercing or explosive shells, as opposed to the bullet fired by a machine gun. Autocannons often have a larger calibre than a machine gun (e.g., 20mm or greater), but are usually smaller than a field gun or other artillery. When used on its own, the word "autocannon" indicates a single-barrel weapon. When multiple rotating barrels are involved, the word "rotary" is added, and such a weapon is referred to as a "rotary autocannon." Modern autocannons are typically not single soldier-portable or stand-alone units, rather they are usually vehicle-mounted, aircraft-mounted, or boat-mounted, or even remote-operated as in some naval applications. As such, ammunition is typically fed from a belt to reduce reloading or for a faster rate of fire, but a magazine remains an option. They can use a variety of ammunition: common shells include high-explosive dual-purpose types (HEDP), any variety of armour-piercing (AP) types, such as composite rigid (APCR) or discarding sabot types (APDS)., A battle rifle is a military service rifle that fires a full-power rifle cartridge, such as 7.6251mm NATO, 7.6254mmR, 7.92x57mm Mauser, .303 British, or .30-06 Springfield. Compared to assault rifles and their intermediate cartridges, the higher-caliber rounds provide greater power and range, though they have greater weight and produce stronger recoil, making them less than ideal for fully automatic fire., A field gun is an artillery piece. Originally the term referred to smaller guns that could accompany a field army on the march and when in combat could be moved about the battlefield in response to changing circumstances (field artillery), as opposed to guns installed in a fort (garrison artillery/coastal artillery), or to siege cannon or mortars which were too large to be moved quickly, and would be used only in a prolonged siege., A submachine gun (SMG) is an air-cooled, magazine-fed, automatic carbine designed to fire pistol cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun., Rate of fire is the frequency at which a specific weapon can fire or launch its projectiles. It is usually measured in rounds per minute (RPM or round/min), or rounds per second (RPS or round/s)., A machine gun is a fully automatic mounted or portable firearm, designed to fire bullets in quick succession from an ammunition belt or magazine, typically at a rate of 300 to 1800 rounds per minute. Fully automatic firearms are generally categorized as submachine guns, assault rifles, battle rifles, automatic shotguns, machine guns, or autocannons. Machine guns with multiple rotating barrels are referred to as "rotary machine guns"., An automatic shotgun is an automatic firearm that fires shotgun shells and uses some of the energy of each shot to automatically cycle the action and load a new round. It will fire repeatedly until the trigger is released or ammunition runs out. Automatic shotguns have a very limited range, but provide tremendous firepower at close range., A shotgun (also known as a scattergun, or historically as a fowling piece) is a firearm that is usually designed to be fired from the shoulder, which uses the energy of a fixed shell to fire a number of small spherical pellets called shot, or a solid projectile called a slug. Shotguns come in a wide variety of sizes, ranging from 5.5mm (.22inch) bore up to bore, and in a range of firearm operating mechanisms, including breech loading, single-barreled, double or combination gun, pump-action, bolt-, and lever-action, semi-automatic, and even fully automatic variants., Artillery is a class of large military weapons built to fire munitions far beyond the range and power of infantry's small arms. Early artillery development focused on the ability to breach fortifications, and led to heavy, fairly immobile siege engines. As technology improved, lighter, more mobile field artillery developed for battlefield use. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility providing the largest share of an army's total firepower., An assault rifle is a selective-fire rifle that uses an intermediate cartridge and a detachable magazine. Assault rifles were first used during World War II. Though Western nations were slow to accept the assault rifle concept after World War II, by the end of the 20th century they had become the standard weapon in most of the world's armies, replacing semi-automatic rifles, battle rifles and sub-machine guns in most roles. Examples include the StG 44, AK-47 and the M16 rifle., Subject: chain gun, Relation: subclass_of, Options: (A) ability (B) action (C) ammunition (D) army (E) artillery (F) assault rifle (G) autocannon (H) battle (I) battle rifle (J) belt (K) bullet (L) cannon (M) class (N) energy (O) field gun (P) fire (Q) firearm (R) fort (S) gun (T) hunting (U) infantry (V) lighter (W) machine (X) magazine (Y) march (Z) military ([) option (\) part (]) power (^) projectile (_) rate (') rifle (a) service (b) shooting (c) shot (d) shotgun (e) single (f) solid (g) submachine gun (h) technology (i) term (j) variety (k) vehicle (l) weapon (m) word

Ex Output:
firearm

Ex Input:
Context: Watford is a town and borough in Hertfordshire, England, situated northwest of central London and inside the circumference of the M25 motorway. It is not to be confused with Watford, Northamptonshire which is 55 miles to the north., Chiltern Railways is a British train operating company owned by Arriva UK Trains that has operated the Chiltern Railways franchise since July 1996. It operates commuter/regional rail passenger services from its Central London terminus at London Marylebone along the M40 corridor to destinations in Buckinghamshire, Oxfordshire and Warwickshire, as well as long-distance services to the West Midlands along two routes. Services on the Chiltern Main Line run from London Marylebone to Birmingham Snow Hill, Stratford-upon-Avon and Oxford, with some peak-hour services to Kidderminster., Chesham (, or ) is a market town in the Chiltern Hills, Buckinghamshire, England. It is located 11 miles south-east of the county town of Aylesbury. Chesham is also a civil parish designated a town council within Chiltern district. It is situated in the Chess Valley and surrounded by farmland, as well as being bordered on one side by Amersham and Chesham Bois. The earliest records of Chesham as a settlement are from the second half of the 10th century although there is archaeological evidence of people in this area from around 8000 BC. Henry III granted the town a royal charter for a weekly market in 1257., The Metropolitan line is a London Underground line that runs from Aldgate, in the City of London, to Amersham and Chesham in Buckinghamshire, with branches to Watford in Hertfordshire, and Uxbridge in the London Borough of Hillingdon. Coloured magenta (Pantone 235) on the tube map, the line is in length and serves 34 stations. The section between Aldgate and Baker Street is shared with the Circle and Hammersmith & City lines; that between Rayners Lane and Uxbridge with the Piccadilly line; and that between Harrow-on-the-Hill and Amersham with Chiltern Railways. Just under 67million passenger journeys were made on the line in 2011/12. The line is one of only two London Underground lines to cross the Greater London boundary, the other being the Central line., Uxbridge is a town in west London, England, and the administrative headquarters of the London Borough of Hillingdon. Fifteen miles (24.1km) west-northwest of Charing Cross, it is one of the major metropolitan centres identified in the London Plan. Uxbridge historically formed part of the parish of Hillingdon in the county of Middlesex, and was a significant local commercial centre from an early time. As part of the suburban growth of London in the 20th century it expanded and increased in population, becoming a municipal borough in 1955, and has formed part of Greater London since 1965. It is a significant retail and commercial centre, and is the location of Brunel University and the Uxbridge campus of Buckinghamshire New University. The town is close to the boundary with Buckinghamshire, which is locally the River Colne., Pantone Inc. is a corporation headquartered in Carlstadt, New Jersey. The company is best known for its Pantone Matching System (PMS), a proprietary color space used in a variety of industries, primarily printing, though sometimes in the manufacture of colored paint, fabric, and plastics., Northwood Hills is a London Underground station on the Metropolitan line in the area of Northwood , between Northwood and Pinner stations and is in Travelcard Zone 6 ., Buckinghamshire (or ), abbreviated Bucks, is a county in South East England which borders Greater London to the south east, Berkshire to the south, Oxfordshire to the west, Northamptonshire to the north, Bedfordshire to the north east and Hertfordshire to the east., Aldgate was the eastern-most gateway through the London Wall leading from the City of London to Whitechapel and the East End of London. It gives its name to a City ward bounded by White Kennet Street in the north and Crutched Friars in the south, taking in Leadenhall and Fenchurch Streets, which remain principal thoroughfares through the City, each splitting from the short street named Aldgate that connects to Aldgate High Street. The road is situated east north-east of Charing Cross., The London Underground (also known simply as the Underground, or by its nickname the Tube) is a public rapid transit system serving Greater London and some parts of the adjacent counties of Buckinghamshire, Essex and Hertfordshire in the United Kingdom., The London Borough of Hillingdon is the westernmost borough in Greater London, England which had a population of 273,936 according to the 2011 Census. It was formed from the districts of Hayes and Harlington, Ruislip-Northwood, Uxbridge, and Yiewsley and West Drayton in the historic county of Middlesex. Today, Hillingdon is home to Heathrow Airport and Brunel University, and is the second largest of the 32 London boroughs by area., 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 City of London is a city and county within London. It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the agglomeration has since grown far beyond the City's borders. The City is now only a tiny part of the metropolis of London, though it remains a notable part of central London. Administratively, it forms one of the 33 local authority districts of Greater London; however, the City of London is not a London borough, a status reserved for the other 32 districts (including London's only other city, the City of Westminster). , Hertfordshire (often abbreviated Herts) is a county in southern England, bordered by Bedfordshire to the north, Cambridgeshire to the north-east, Essex to the east, Buckinghamshire to the west and Greater London to the south. For government statistical purposes, it is placed in the East of England region., Amersham is a market town and civil parish within Chiltern district in Buckinghamshire, England, north west of London, in the Chiltern Hills. It is part of the London commuter belt. Amersham is also from Aylesbury and from High Wycombe., The Piccadilly line is a line of the London Underground, coloured dark blue on the Tube map. It is the fourth busiest line on the Underground network on the basis of the number of passengers transported per year with 210,000,000. It is mainly a deep-level line, running from the north to the west of London via Zone 1, with a number of surface sections, mostly in its westernmost parts. It is named after the road above it between Hyde Park Corner and Piccadilly Circus. Some of its stations are shared with the District line and some are shared with the Metropolitan line. It is the second longest line on the system, after the Central line, and has the second most stations, after the District line. It serves many of London's top tourist attractions including Harrods (Knightsbridge), Hyde Park, Buckingham Palace (within walking distance from Green Park), Piccadilly Circus, Leicester Square and Covent Garden, as well as London Heathrow Airport, the busiest airport in Europe. The line shares tracks with the Metropolitan line between Uxbridge and Rayners Lane, and with the District line between Hanger Lane Junction and Acton Town, then runs parallel with the District line between Acton Town and Barons Court., In cryptography, MAGENTA is a symmetric key block cipher developed by Michael Jacobson Jr. and Klaus Huber for Deutsche Telekom. The name MAGENTA is an acronym for Multifunctional Algorithm for General-purpose Encryption and Network Telecommunication Applications. (The color magenta is also part of the corporate identity of Deutsche Telekom.) The cipher was submitted to the Advanced Encryption Standard process, but did not advance beyond the first round; cryptographic weaknesses were discovered and it was found to be one of the slower ciphers submitted., The Tube map is a schematic transport map of the lines, stations and services of London's public transport systems, the primary system being London Underground, known colloquially as "the Tube", hence the map's name. The first schematic Tube map was designed by Harry Beck in 1931, and it has since been expanded to also include today the Docklands Light Railway, London Overground, TfL Rail, Tramlink and the Emirates Air Line cable car., Subject: northwood hills tube station, Relation: located_in_the_administrative_territorial_entity, Options: (A) amersham (B) baker (C) bedfordshire (D) buckinghamshire (E) cable (F) central (G) chesham (H) chiltern (I) colne (J) cross (K) district (L) east end of london (M) england (N) europe (O) greater london (P) hertfordshire (Q) hyde park (R) london (S) london borough of hillingdon (T) magenta (U) middlesex (V) most (W) new jersey (X) northwood (Y) of (Z) oxford ([) oxfordshire (\) piccadilly (]) river (^) road (_) south (') south east england (a) street (b) uxbridge (c) watford (d) west (e) west midlands (f) westminster (g) wycombe

Ex Output:
london borough of hillingdon

Ex Input:
Context: Somerset is a county in South West England which borders Gloucestershire and Bristol to the north, Wiltshire to the east, Dorset to the south-east and Devon to the south-west. It is bounded to the north and west by the Severn Estuary and the Bristol Channel, its coastline facing southeastern Wales. Its traditional border with Gloucestershire is the River Avon. Somerset's county town is Taunton., Warminster is a town and civil parish in western Wiltshire, England, by-passed by the A36 (between Salisbury and Bath) and the partly concurrent A350 between Westbury and Blandford Forum. It has a population of about 17,000. The River Were runs through the town and can be seen running through the middle of the town park. The Minster Church of St Denys sits on the River Were. The name Warminster first occurs in the early 10th century., Duke of Somerset is a title in the peerage of England that has been created several times. Derived from the county of Somerset, it is particularly associated with two families: the Beauforts who held the title from the creation of 1448, and the Seymours from the creation of 1547, in whose name the title is still held. The present dukedom is unique, in that the first holder of the title created it for himself in his capacity of Lord Protector of the Kingdom of England, using a power granted in the Will of his nephew King Edward VI. , Algernon St. Maur , later Seymour , 15th Duke of Somerset , etc. ( 22 July 1846 -- Maiden Bradley , 22 October 1923 ) was the son of Algernon St. Maur , 14th Duke of Somerset and Horatia Morler . He was also a baronet . On September 5 , 1877 , he married Susan Margaret Richards Mackinnon , the ninth daughter of Charles Mackinnon of Corriechatachan . Because St. Maur did not have any children , his titles passed to his nearest relative , Edward Seymour . He was educated at Britannia Royal Naval College , but later joined the 60th Rifles and took part in the Wolseley Expedition of 1870 . He was a tall and athletic man , of powerful build . After leaving the Regular Army , he spent several years ranching in Western America . On accession to the Dukedom in 1894 , he voted often in the House of Lords , although he seldom spoke there . He became president of Dr Barnardo 's Homes , a charity which both he and the Duchess had supported for many years . The Duke and the Duchess ( d. 1936 ) were buried on Brimble Hill near their residence at Bradley House , Maiden Bradley , West Wiltshire . Their graves are in a little wood on a hilltop surrounded by agricultural land . They are surrounded by a metal fence and marked by standing rough stones with small text plaques ., Frome is a town and civil parish in eastern Somerset, England. Located at the eastern end of the Mendip Hills, the town is built on uneven high ground, and centres on the River Frome. The town is approximately south of Bath, east of the county town, Taunton and west of London. In the 2011 census, the population was given as 26,203. The town is in the Mendip district of Somerset and is part of the parliamentary constituency of Somerton and Frome., Wiltshire (or ) is a county in South West England with an area of . It is landlocked and borders the counties of Dorset, Somerset, Hampshire, Gloucestershire, Oxfordshire and Berkshire. The county town was Wilton but Wiltshire Council is now based in the new county town of Trowbridge., Maiden Bradley is a village in southwest Wiltshire, England, about southwest of Warminster and bordering the county of Somerset. The B3092 road between Frome and Mere forms the village street. Bradley House, the seat of the Duke of Somerset, is adjacent to the village., Subject: algernon seymour, Relation: place_of_birth, Options: (A) bath (B) blandford (C) council (D) devon (E) dorset (F) england (G) frome (H) gloucestershire (I) hampshire (J) king edward (K) kingdom of england (L) minster (M) of (N) parish (O) somerset (P) street (Q) trowbridge (R) warminster (S) westbury (T) wilton (U) wiltshire

Ex Output:
bath