Question: Marion railway station is located in a suburb of Adelaide founded as a rural village in what year ?

full_context: Document 1: 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 2: 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 3: 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 4: Seaford, South Australia: Seaford is a metropolitan suburb of Adelaide, South Australia. It lies within the City of Onkaparinga. Seaford railway station is the southern terminus of the Seaford railway line from Adelaide railway station.
Document 5: Outer Harbor railway line: The Outer Harbor railway line is a suburban branch line in Adelaide, South Australia. It runs from Adelaide station through the north western suburbs to Port Adelaide and Outer Harbor. It is 21.9 kilometres in length, and shares part of its run with the Grange line. It is operated by Adelaide Metro.
Document 6: City of Campbelltown (South Australia): The City of Campbelltown is a local government area in the north eastern suburbs of Adelaide, South Australia about 6 kilometres from the Adelaide GPO. The City is bordered by the River Torrens and the City of Tea Tree Gully, the District of Adelaide Hills, the City of Burnside, the City of Norwood Payneham St Peters, and the City of Port Adelaide Enfield. The City has an estimated population of 51,889 people.
Document 7: 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 8: 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.
Document 9: Broadmeadows railway station, Adelaide: Broadmeadows railway station is located on the Gawler Central line. Situated on the boundary between the northern Adelaide suburbs of Davoren Park and Elizabeth North, and is located 28.2 km from Adelaide station.
Document 10: 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 11: 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 12: 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 13: Coast to Vines Rail Trail: The Coast to Vines rail trail open to pedestrians and cyclists, runs for 34 km through the southern suburbs of Adelaide from Marino to Willunga. Much of the trail has been constructed on the disused Willunga railway line.
Document 14: 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 15: Christie Downs railway station: Christie Downs railway station is located on the Seaford line. Situated in the southern Adelaide suburb of Christie Downs, it is 28.9 kilometres from Adelaide station.
ground_truth: 1838