Question: What city adjacent to Mitchell Park was founded in 1838 on the banks of the Sturt River?

full_context: Document 1: Marion, South Australia: Marion is a suburb in the City of Marion in Adelaide around 10 km south-west of the CBD. Founded as a rural village in 1838 on the banks of the Sturt River, Marion was found to have rich soil and the population expanded rapidly. Colonel William Light laid out the plan for the village, as he had done with the City of Adelaide itself.
Document 2: Lower Mitcham, South Australia: Lower Mitcham is an inner southern suburb of Adelaide, South Australia in the local government area of Mitcham. To the north, it is bounded by Grange Road, to the east by Belair Road, to the south by Murray Street. To the west, the suburb is bordered by a line running from Murray Street along View Street and continuing north to Grange Road.
Document 3: Marion, South Australia: Marion is a suburb in the City of Marion in Adelaide around 10 km south-west of the CBD. Founded as a rural village in 1838 on the banks of the Sturt River, Marion was found to have rich soil and the population expanded rapidly. Colonel William Light laid out the plan for the village, as he had done with the City of Adelaide itself.
Document 4: Rose Park, South Australia: Rose Park is a suburb with a population of 1,293 in the South Australian capital city of Adelaide. It is located one kilometre east of Adelaide's central business district (CBD). Rose Park is a leafy, tree-lined and wealthy inner suburb containing a number of historical and contemporary attractions. Much of the area's 19th Century housing stock has been recognised with heritage protection.
Document 5: Daw Park, South Australia: Daw Park is an inner southern suburb of Adelaide, Australia, in the local government area of the City of Mitcham. The suburb is divided into two parts, with a smaller exclave separated from the larger southern part by a section of Colonel Light Gardens. This smaller exclave is surrounded by the suburbs of Colonel Light Gardens to the south and east, Cumberland Park to the north and Melrose Park to the west. The southern exclave is surrounded by Pasadena to the south, Melrose Park to the west, Colonel Light Gardens to the north and east. Daw Park is part of the South Australian House of Assembly electoral district of Elder and the House of Representatives Division of Boothby.
Document 6: Electoral district of Mitchell (South Australia): Mitchell is an electoral district of the House of Assembly in the state of South Australia. It was first created in the redistribution of 1969, taking effect at the 1970 election. Mitchell is named after philosopher Sir William Mitchell. Mitchell is located in inner-south western Adelaide, covering 26.8 km² and encompassing the suburbs of Dover Gardens, Old Reynella, Reynella, Seacombe Gardens, Seacombe Heights, Seaview Downs, Sheidow Park, Sturt and Trott Park and parts of Darlington, O'Halloran Hill, Oaklands Park and Warradale. The suburbs contained within the seat in 2010 were completely different as recently as 1989. The 1989 seat centered on Park Holme, north-east of the current incarnation of Mitchell, where much of the seat of Elder is. The 1989 boundary bordered the 2010 boundary in the south-west and north-east respectively.
Document 7: Somerton Park, South Australia: Somerton Park is a suburb of Adelaide in South Australia. The mainly residential seaside suburb is home to the Somerton Park Beach, and also to Sacred Heart College.
Document 8: Bedford Park, South Australia: Bedford Park is a southern suburb of Adelaide in South Australia.
Document 9: Plympton Park, South Australia: Plympton Park is a western suburb of Adelaide 8 km from the CBD, in the state of South Australia, Australia and falls under the City of Marion. The post code for Plympton Park is 5038. It is adjacent to Park Holme, Plympton, South Plympton, and Morphettville. It is bordered to the east by Marion road, to the west by Park Terrace, to the south by Taranna Avenue and to the north by the Glenelg Tramline.
Document 10: Marion railway station: Marion railway station is located on the Seaford line. Situated in the south-western Adelaide suburb of Marion, it is 11.4 kilometres from Adelaide station.
Document 11: Light's Vision: The first surveyor-general of Adelaide, South Australia, Colonel William Light designed a layout and development programme for the city. This plan is now known as "Light's Vision". Notable aspects of Light's plan are that the city centre is laid out in a grid-like pattern, with squares in the centre of the city and in the centres of the four quarters of the city, (NW, NE, SE, SW), and the city is surrounded by Parklands.
Document 12: Sturt, South Australia: Sturt is a suburb of Adelaide in the City of Marion local government area. It was named after the explorer Captain Charles Sturt.
Document 13: Mitchell Park, South Australia: Mitchell Park is a suburb south of Adelaide. It shares common boundaries with Marion, Bedford Park, Clovelly Park, and Ascot Park. In recent years it has undergone major redevelopments through a program of urban renewal which included the renovation of many properties owned by the former South Australian Housing Trust. These projects have won many awards.
Document 14: Park Holme, South Australia: Park Holme is a southern suburb of Adelaide in the City of Marion, South Australia, home to the Marion Swimming Centre. It is bordered in the east by Marion Road, in the west by Hendrie Street, in the south by Oaklands Road, and in the north by Taranna Ave, just south of Bray Street. It is adjacent to Ascot Park, Edwardstown, South Plympton, Mitchell Park, Clovelly Park, Glengowrie, Morphettville and Oaklands Park. Park Holme
Document 15: Clovelly Park, South Australia: Clovelly Park is an inner southern suburb of Adelaide in the local government area of the City of Marion. Before becoming an 'advanced' suburb, it was a farm and vineyard. It has a population of around 2,700. The borders are defined by Daws Road to the north, South Road to the east, Sturt Road to the south, and a combination of Percy Avenue and the Tonsley railway line to the west. It is situated approximately 20 minutes from the CBD, and about 2 minutes from Flinders University, Flinders Medical Centre and Westfield Marion.
ground_truth: Marion