Question: What was the 2015 population of the city where Garsington Manor in located?

full_context: Document 1: Kelmscott House: Kelmscott House is a Georgian brick mansion at 26 Upper Mall in Hammersmith, overlooking the River Thames. It was the London home of English textile designer, artist, writer and socialist William Morris from October 1878 until his death in October 1896.
Document 2: University of Oxford: The University of Oxford (informally Oxford University or simply Oxford) is a collegiate research university located in Oxford, England. It has no known date of foundation, but there is evidence of teaching as far back as 1096, making it the oldest university in the English-speaking world and the world's second-oldest university in continuous operation. It grew rapidly from 1167 when Henry II banned English students from attending the University of Paris. After disputes between students and Oxford townsfolk in 1209, some academics fled north-east to Cambridge where they established what became the University of Cambridge. The two "ancient universities" are frequently jointly referred to as "Oxbridge".
Document 3: Garsington Opera: Garsington Opera is an annual open air summer opera festival founded in 1989 by Leonard Ingrams. For 21 years it was held in the gardens of Ingrams's home at Garsington Manor in Oxfordshire. Since 2011 the festival is held in Wormsley Park, the home of the Getty family near Stokenchurch in Buckinghamshire, England. After Ingrams's death in 2005 Anthony Whitworth-Jones became its General Director until 2013 when Douglas Boyd became Artistic Director.
Document 4: Loseley Park: Loseley Park is a large Tudor manor house with later additions and modifications 3 mi south-west of Guildford, Surrey, England in Artington close to the hamlet of Littleton. The estate was acquired by the direct ancestors of the current owners, the More-Molyneux, at the beginning of the 16th century. The house built for Sir William More is a Grade I listed building, the highest rank in architecture or heritage. Loseley appears in Domesday Book of 1086 as "Losele". It was held by Turald (Thorold) from Roger de Montgomery. Its domesday assets were: 2 hides. It had 4 ploughs, 5 acre of meadow. It rendered £3. The papers of Sir Thomas Cawarden, Master of the Revels were formerly preserved in the house. Loseley Park is still the residence of the More-Molyneux family and is open to the public. The 17th century tithe barn is available for weddings.
Document 5: Oxford-Cambridge Arc: The Oxford-Cambridge Arc is a notional arc of agricultural and urban land at about 75km (about 50 miles) radius of London, southern England. It runs between the two English university towns of Oxford and Cambridge via Milton Keynes and other important settlements in Cambridgeshire, Bedfordshire, Buckinghamshire and Oxfordshire, at the northern rim of the London commuter belt. It is significant only in economic geography, with little physical geography in common.
Document 6: Sutton Place, Surrey: Sutton Place, 3 miles north-east of Guildford in Surrey, is a Grade I listed Tudor manor house built c.1525 by Sir Richard Weston (d.1541), courtier of Henry VIII. It is of great importance to art history in showing some of the earliest traces of Italianate renaissance design elements in English architecture. In modern times, the estate has had a series of wealthy owners, a trend started by J. Paul Getty, then the world's richest private citizen, who chose to spend the last 17 years of his life there. Its current owner is the Russian billionaire Alisher Usmanov. A definitive history of the house and manor, first published in 1893, was written by Frederic Harrison (d.1923), jurist and historian, whose father had acquired the lease in 1874.
Document 7: Bristol: Bristol ( ) is a city and county in South West England with a population of 454,200 in 2017. The district has the 10th-largest population in England, while the Bristol metropolitan area is the 12th-largest in the United Kingdom. The city borders North Somerset and South Gloucestershire, with the cities of Bath and Gloucester to the south-east and north-east, respectively.
Document 8: Cambridge: Cambridge ( ) is a university city and the county town of Cambridgeshire, England, on the River Cam approximately 50 mi north of London. At the United Kingdom Census 2011, its population was 123,867, including 24,488 students.
Document 9: South East England: South East England is the most populous of the nine official regions of England at the first level of NUTS for statistical purposes. It consists of Berkshire, Buckinghamshire, East Sussex, Hampshire, the Isle of Wight, Kent, Oxfordshire, Surrey and West Sussex. As with the other regions of England, apart from Greater London, the south east has no elected government.
Document 10: Oxford, Maine: Oxford is a town in Oxford County, Maine, United States. The population was 4,110 at the 2010 census. Oxford is home to the Oxford Plains Speedway, the annual Oxford County Fair, and Oxford Casino. The town includes the village of Welchville.
Document 11: Garsington Manor: Garsington Manor, in the village of Garsington, near Oxford, England, is a Tudor building, best known as the former home of Lady Ottoline Morrell, the Bloomsbury Group socialite. The house is currently owned by the family of Leonard Ingrams and from 1989 to 2010 has been the setting for an annual summer opera season, the Garsington Opera, which relocated to Wormsley Park, the home of Mark Getty near Stokenchurch in Buckinghamshire, in 2011.
Document 12: Manorhaus, Ruthin: Manorhaus is currently a boutique restaurant with rooms and is also an art gallery. It was owned by John Lennon's first wife, Cynthia Lennon, and their son, Julian Lennon, attended Ruthin School. Manorhaus has 8 rooms, each decorated with a different theme and interior design by local artists. It also has a gym, sauna, steam room and also a well-stocked library available to guests.
Document 13: Oxford: Oxford ( ) is a city in the South East region of England and the county town of Oxfordshire. With an estimated 2015 population of 168,270, it is the 52nd largest city in the United Kingdom, and one of the fastest growing and most ethnically diverse. The city is situated 57 mi from London, 69 mi from Bristol, 65 mi from both Southampton and Birmingham and 25 mi from Reading.
Document 14: Country house opera: Country house opera is opera performed at a country house, whether in the house itself, in the grounds, or in an adapted or purpose built theatre on the grounds. It is a feature in particular of the English summer. Country house opera is usually initiated by private enthusiasts, and relies almost exclusively upon private funding. This distinguishes it from the UK's state subsidised opera companies which, like most opera houses around the world, are based in city centres. Black tie is often "de rigueur", in contrast with the Royal Opera House in London and other city operas where casual clothing is often acceptable.
Document 15: Exeter: Exeter ( ) is a cathedral city in Devon England with a population of 129,800 (mid-2016 est. ). It lies within the county of Devon, of which it is the county town as well as the home of Devon County Council. The administrative area has the status of a non-metropolitan district under the administration of the County Council; a plan to grant the city unitary authority status was scrapped under the 2010 coalition government. The city is on the River Exe about 37 mi northeast of Plymouth and 70 mi southwest of Bristol.
ground_truth: 168,270