Question: What metropolitan area is the city, that includes the residential area of Kingston, Hampshire, a part of?

full_context: Document 1: Southampton: At the 2001 Census, 92.4 per cent of the city's populace was White—including one per cent White Irish—3.8 per cent were South Asian, 1.0 per cent Black, 1.3 per cent Chinese or other ethnic groups, and 1.5 per cent were of Mixed Race.
Document 2: Kingston, Hampshire: Kingston is a residential area of the city of Portsmouth in the English county of Hampshire, located between Buckland, Fratton and North End. It was a recognised suburb of the city by the middle of the 19th century.
Document 3: Kingston upon Thames: Kingston upon Thames, also known as Kingston, is an area of south west London, England, located 10.4 miles (16.7 km) south west of Charing Cross. It is the administrative centre of the Royal Borough of Kingston upon Thames, and identified as a major metropolitan centre in the London Plan.
Document 4: Southampton: The city has a strong higher education sector. The University of Southampton and Southampton Solent University together have a student population of over 40,000.
Document 5: Southampton: Southampton is divided into council wards, suburbs, constituencies, ecclesiastical parishes, and other less formal areas. It has a number of parks and green spaces, the largest being the 148 hectare Southampton Common, parts of which are used to host the annual summer festivals, circuses and fun fairs. The Common includes Hawthorns Urban Wildlife Centre on the former site of Southampton Zoo, a paddling pool and several lakes and ponds.
Document 6: Southampton: Southampton (i/saʊθˈæmptən, -hæmptən/) is the largest city in the ceremonial county of Hampshire on the south coast of England, and is situated 75 miles (121 km) south-west of London and 19 miles (31 km) north-west of Portsmouth. Southampton is a major port and the closest city to the New Forest. It lies at the northernmost point of Southampton Water at the confluence of the River Test and River Itchen, with the River Hamble joining to the south of the urban area. The city, which is a unitary authority, has an estimated population of 253,651. The city's name is sometimes abbreviated in writing to "So'ton" or "Soton", and a resident of Southampton is called a Sotonian.
Document 7: Southampton: Southampton as a Port and city has had a long history of administrative independence of the surrounding County; as far back as the reign of King John the town and its port were removed from the writ of the King's Sheriff in Hampshire and the rights of custom and toll were granted by the King to the burgesses of Southampton over the port of Southampton and the Port of Portsmouth; this tax farm was granted for an annual fee of £200 in the charter dated at Orival on 29 June 1199. The definition of the port of Southampton was apparently broader than today and embraced all of the area between Lymington and Langstone. The corporation had resident representatives in Newport, Lymington and Portsmouth. By a charter of Henry VI, granted on 9 March 1446/7 (25+26 Hen. VI, m. 32), the mayor, bailiffs and burgesses of the towns and ports of Southampton and Portsmouth became a County incorporate and separate from Hampshire.
Document 8: Southampton: Southampton had an estimated 236,900 people living within the city boundary in 2011. There is a sizeable Polish population in the city, with estimates as high as 20,000.
Document 9: Southampton: The city has undergone many changes to its governance over the centuries and once again became administratively independent from Hampshire County as it was made into a unitary authority in a local government reorganisation on 1 April 1997, a result of the 1992 Local Government Act. The district remains part of the Hampshire ceremonial county.
Document 10: Portsmouth Water: Portsmouth Water is the utility company responsible for water supply and distribution in the City of Portsmouth, part of East Hampshire and part of West Sussex. Places served include Gosport, Fareham, Portsmouth, Havant, Chichester and Bognor Regis. The company is a private limited company with company number 2536455.
Document 11: Southampton: There are 119,500 males within the city and 117,400 females. The 20–24 age range is the most populous, with an estimated 32,300 people falling in this age range. Next largest is the 25–29 range with 24,700 people and then 30–34 years with 17,800. By population, Southampton is the largest monocentric city in the South East England region and the second largest on the South Coast after Plymouth.
Document 12: Portsmouth, Virginia: Portsmouth is an independent city in the Commonwealth of Virginia. As of the 2010 census, the population was 95,535. It is part of the Hampton Roads metropolitan area.
Document 13: Southampton: Between 1996 and 2004, the population of the city increased by 4.9 per cent—the tenth biggest increase in England. In 2005 the Government Statistics stated that Southampton was the third most densely populated city in the country after London and Portsmouth respectively. Hampshire County Council expects the city's population to grow by around a further two per cent between 2006 and 2013, adding around another 4,200 to the total number of residents. The highest increases are expected among the elderly.
Document 14: Drayton, Hampshire: Drayton is a residential area of the city of Portsmouth in the English county of Hampshire. Together with Farlington, its parent area, it makes up one of the electoral wards of the city.
Document 15: Southampton: In the 2001 census Southampton and Portsmouth were recorded as being parts of separate urban areas, however by the time of the 2011 census they had merged to become the sixth largest built-up area in England with a population of 855,569. This built-up area is part of the metropolitan area known as South Hampshire, which is also known as Solent City, particularly in the media when discussing local governance organisational changes. With a population of over 1.5 million this makes the region one of the United Kingdom's most populous metropolitan areas.
ground_truth: South Hampshire
sub_queries: Kingston, Hampshire >> located in the administrative territorial entity Answer: Portsmouth
What metropolitan area is Portsmouth a part of? Answer: South Hampshire