You will be given a definition of a task first, then some input of the task.
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).

Context: The Thames Estuary is the estuary in which the River Thames meets the waters of the North Sea, in the south-east of Great Britain., The River Thames is a river that flows through southern England. At , it is the longest river entirely in England and the second longest in the United Kingdom, after the River Severn. It also flows through Oxford (where it is called Isis), Reading, Henley-on-Thames and Windsor. The lower reaches of the river are called the Tideway, derived from its long tidal reach up to Teddington Lock. It rises at Thames Head in Gloucestershire, and flows into the North Sea via the Thames Estuary. The Thames drains the whole of Greater London. , Oxford is a city in the South East region of England and the county town of Oxfordshire. With a population of 159,994 it is the 52nd largest city in the United Kingdom, and one of the fastest growing and most ethnically diverse. The city is situated from London, from Bristol, from both Southampton and Birmingham and from Reading., Surrey is a county in the south east of England and also one of the home counties bordering Greater London. Surrey shares borders with Kent to the east, East Sussex to the south-east, West Sussex to the south, Hampshire to the west and south-west and Berkshire to the north-west. The county town is Guildford. Surrey County Council sits extraterritorially at Kingston upon Thames, administered as part of Greater London since 1965. With a resident population of 1.1 million, Surrey is the most densely populated and third most populated county in the South East region, after Kent and Hampshire., Teddington is a town in the London Borough of Richmond upon Thames. Until 1965, it was in the historic county of Middlesex. Teddington is on the north bank of the Thames, just after the start of a long meander, between Hampton Wick and Strawberry Hill, Twickenham. Mostly residential, it stretches from the Thames to Bushy Park with a long high street reaching down to pubs, restaurants, leisure premises, fields and fitness clubs by the riverside, having a pedestrian suspension bridge over the lowest non-tidal lock on the Thames, Teddington Lock. Teddington has no dual carriageways or high-rise residential buildings and its centre is mid-rise urban development., 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., The Tideway is a name given to the part of the River Thames in England that is subject to tides. This stretch of water is downstream from Teddington Lock and is in its widest definition just under long. The Tideway includes the Thames Estuary, the Thames Gateway and the Pool of London., London is the capital and most populous city of England and the United Kingdom, as well as the most populous city proper in the European Union. Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement for two millennia. It was founded by the Romans, who named it "Londinium". London's ancient core, the City of London, largely retains its medieval boundaries. Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent, and Hertfordshire, which today largely makes up Greater London, governed by the Mayor of London and the London Assembly., 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., 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). , The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union., Great Britain, also known as Britain , is a large island in the north Atlantic Ocean off the northwest coast of continental Europe. With an area of , Great Britain is the largest European island and the ninth-largest in the world. In 2011 the island had a population of about 61 million people, making it the world's third-most populous island after Java in Indonesia and Honshu in Japan. The island of Ireland is situated to the west of it, and together these islands, along with over 1,000 smaller surrounding islands, comprise the British Isles archipelago., Kent is a county in South East England and one of the home counties. It borders Greater London to the north west, Surrey to the west, East Sussex to the south west, and Essex across the Thames Estuary to the north. The county town is Maidstone. , Kennington is a district in London , England , south of the River Thames . It is mainly within the London Borough of Lambeth , running along the boundary with the London Borough of Southwark a boundary which can be discerned from the early medieval period between the Lambeth and St George 's parishes of those boroughs respectively . It is located 1.4 miles ( 2.3 km ) south of Charing Cross , in Inner London and is identified as a local centre in the London Plan . It was a royal manor in the ancient parish of St Mary , Lambeth in the county of Surrey and was the administrative centre of the parish from 1853 . Proximity to central London was key to the development of the area as a residential suburb and it was incorporated into the metropolitan area of London in 1855 . Kennington is the location of three significant London landmarks : the Oval cricket ground , the Imperial War Museum , and Kennington Park . Its population at the United Kingdom Census 2011 was 21,287 ., The London Assembly is an elected body, part of the Greater London Authority, that scrutinises the activities of the Mayor of London and has the power, with a two-thirds majority, to amend the Mayor's annual budget and to reject the Mayor's draft statutory strategies. The assembly was established in 2000 and meets at City Hall on the South Bank of the River Thames, close to Tower Bridge. The assembly is also able to investigate other issues of importance to Londoners (transport, environmental matters, etc.), publish its findings and recommendations, and make proposals to the Mayor., Henley-on-Thames is a town and civil parish on the River Thames in Oxfordshire, England, northeast of Reading and 7 miles west of Maidenhead. One of its boundaries has the tripoint of Oxfordshire, Berkshire and Buckinghamshire. The 2011 Census recorded the parish population as 11,619.
History.
<includeonly>Henley does not appear in Domesday Book of 1086; often it is mistaken for "Henlei" in the book which is in Surrey.</includeonly>
The first record of Henley is from 1179, when it is recorded that King Henry II "had bought land for the making of buildings". King John granted the manor of Benson and the town and manor of Henley to Robert Harcourt in 1199. A church at Henley is first mentioned in 1204. In 1205 the town received a paviage grant, and in 1234 the bridge is first mentioned. In 1278 Henley is described as a hamlet of Benson with a chapel. The street plan was probably established by the end of the 13th century., Gloucestershire (; abbreviated Glos.) is a county in South West England. The county comprises part of the Cotswold Hills, part of the flat fertile valley of the River Severn, and the entire Forest of Dean., Londinium was a settlement established on the current site of the City of London around  43. Its bridge over the River Thames turned the city into a road nexus and major port, serving as a major commercial centre in Roman Britain until its abandonment during the 5th century., The Mayor of London is an elected politician who, along with the London Assembly of 25 members, is accountable for the strategic government of Greater London. The current mayor is Sadiq Khan, who took up office on 9 May 2016. The position had been held by Ken Livingstone from the creation of the role on 4 May 2000 until he was defeated in 2008 by Boris Johnson, who served two terms before being succeeded by Khan., England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west. The Irish Sea lies northwest of England and the Celtic Sea lies to the southwest. England is separated from continental Europe by the North Sea to the east and the English Channel to the south. The country covers five-eighths of the island of Great Britain (which lies in the North Atlantic) in its centre and south; and includes over 100 smaller islands such as the Isles of Scilly, and the Isle of Wight., Teddington Lock is a complex of three locks and a weir on the River Thames in England at Ham in south west London. The lock is on the southern side of the river., The River Severn (Welsh: "Afon Hafren", Latin: "Sabrina") is the longest river in the United Kingdom, at about . It rises at an altitude of on Plynlimon, close to the Ceredigion/Powys border near Llanidloes, in the Cambrian Mountains of mid Wales. It then flows through Shropshire, Worcestershire and Gloucestershire, with the county towns of Shrewsbury, Worcester and Gloucester on its banks. With an average discharge of at Apperley, Gloucestershire, the Severn is the greatest river in terms of water flow in England and Wales., Thames Head is a site in Gloucestershire, traditionally identified as the source of the River Thames, a major river which runs through the centre of London. It lies near the village of Kemble and the town of Cirencester. The elevation of the source is above sea level., The North Sea is a marginal sea of the Atlantic Ocean located between Great Britain, Scandinavia, Germany, the Netherlands, Belgium, and France. An epeiric (or "shelf") sea on the European continental shelf, it connects to the ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, with an area of around ., Southern England, or the South of England, also known as the South, refers roughly to the southern counties of England. The extent of this area can take a number of different interpretations depending on the context, including geographical, cultural, political and economic., Middlesex (abbreviation: Middx) was a county in southeast England that is now mostly part of Greater London, with small sections in neighbouring counties. It was established in the Anglo-Saxon system from the territory of the Middle Saxons, and existed as an official unit until 1965. The historic county included land stretching north of the River Thames from east to west of the City of London with the rivers Colne and Lea and a ridge of hills as the other boundaries. The largely low-lying county, dominated by clay in its north and alluvium on gravel in its south, was the second smallest by area in 1831., Subject: kennington, Relation: shares_border_with, Options: (A) as (B) atlantic ocean (C) bedfordshire (D) belgium (E) bristol (F) buckinghamshire (G) city of london (H) east (I) england (J) english channel (K) europe (L) european union (M) glos (N) gloucestershire (O) greater london (P) guildford (Q) ham (R) hampton (S) hertfordshire (T) isle (U) johnson (V) kent (W) kingston (X) lies (Y) london (Z) maidenhead ([) major (\) most (]) netherlands (^) north (_) north sea (`) northwest (a) oxfordshire (b) park (c) port (d) severn (e) shrewsbury (f) south (g) south bank (h) southampton (i) strawberry hill (j) surrey (k) thames estuary (l) this (m) united kingdom (n) west (o) westminster (p) worcester
Output:
south bank