Question: What is the name of the local government area near Kersbrook, South Australia?

full_context: Document 1: Lobethal: Lobethal is a town in the Adelaide Hills area of South Australia. It is located in the Adelaide Hills Council local government area, and is nestled on the banks of a creek between the hills and up the sides of the valley. It was once the centre of the Adelaide Hills wool processing industry, which continued until around 1950. The mill buildings are now used by a number of cottage industry and handcraft businesses. At the 2006 census, Lobethal had a population of 1,836 which had grown to 1957 by the 2011 census.
Document 2: 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 3: Adelaide Hills Council: Adelaide Hills Council is a local government area in the Adelaide Hills of South Australia. It is in the hills east of Adelaide, the capital of South Australia, and extends from the South Para Reservoir in the north to the Mount Bold Reservoir in the south.
Document 4: City of Onkaparinga: The City of Onkaparinga is a local government area (LGA) located on the southern fringe of Adelaide, South Australia. It is named after the Onkaparinga River, whose name comes from "Ngangkiparinga", a Kaurna word meaning women's river. It is the largest LGA in South Australia, with an estimated population of 164,800 people in both urban and rural communities and is also geographically expansive, encompassing an area of 518.3 km². The council is headquartered in the Noarlunga Centre with area offices situated in Aberfoyle Park, Woodcroft and Willunga.
Document 5: Adelaide Hills: The Adelaide Hills are part of the Mount Lofty Ranges, east of the city of Adelaide in the state of South Australia. It is unofficially centred on the largest town in the area, Mount Barker, which has a population of around 29,000 and is also one of Australia's fastest growing towns.
Document 6: Mount Osmond, South Australia: Mount Osmond is a small suburb of 2,497 people in the South Australian capital city of Adelaide. It is part of the City of Burnside local government area and located in the foothills of the Adelaide Hills, five kilometres south east of the city centre. The suburb is high on the hill of the same name, which is the last hill on the right when approaching Adelaide down the South Eastern Freeway before the road levels out onto the Adelaide Plains. It is bounded to the north by the suburb of Beaumont, to the north-east by Burnside, to the east by Waterfall Gully, to the south by Leawood Gardens/Eagle On The Hill, to the south-west by Urrbrae, to the west by Glen Osmond and to the north-west by St Georges.
Document 7: Division of Adelaide: The Division of Adelaide is an Australian electoral division in South Australia and is named for the city of Adelaide, South Australia's capital. The 76 km² seat is centred on the Adelaide city centre and spans from Grand Junction Road in the north to Cross Road in the south and from Portrush Road in the east to South Road in the west, taking in suburbs including Ashford, Clarence Park, Enfield, Goodwood, Kent Town, Keswick, Kilburn, Maylands, Northgate, Norwood, Parkside, Prospect, Rose Park, St Peters, Toorak Gardens, Unley and Walkerville.
Document 8: Onkaparinga Hills, South Australia: Onkaparinga Hills is a southern suburb of Adelaide, in the City of Onkaparinga. It covers an area of approximately 22 km2 . It has a population of 2534 people (2011 Census). It is a leafy suburb that includes parts of the Onkaparinga River National Park.
Document 9: City of Salisbury: The City of Salisbury is a local government area (LGA) located on the northern fringes of Adelaide, South Australia. It has an estimated population of 138,535 people and encompasses an area of 158 km². The council's main offices are situated in the Salisbury central business district. Geographically, the region is located on the outskirts of Adelaide. In recent years the council has become a leader in water management and the use of recycled water.
Document 10: Mount Torrens, South Australia: Mount Torrens is a town in the eastern Adelaide Hills region of South Australia, 46 kilometres east-north-east of the state capital, Adelaide and 8 km east of Lobethal along the Onkaparinga River. It is located in the Adelaide Hills Council local government area. At the 2006 census, Mount Torrens had a population of 337.
Document 11: Kersbrook, South Australia: Kersbrook is a town near Adelaide, South Australia. It is located in the Adelaide Hills Council local government area. At the 2006 census, Kersbrook had a population of 367.
Document 12: Geology of South Australia: South Australia is an Australian state, situated in the southern central part of the country, and featuring some low-lying mountain ranges, the most significant being the Mount Lofty Ranges, which extend into the state's capital city, Adelaide, which comprises most of the state's population. Adelaide is situated on the eastern shores of Gulf St Vincent, on the Adelaide Plains, north of the Fleurieu Peninsula, between Gulf St Vincent and the low-lying Mount Lofty Ranges. The state of South Australia, which stretches along the coast of the continent and has boundaries with every other state in Australia, with the exception of the Australian Capital Territory and Tasmania. The Western Australia border has a history with South Australia, involving the South Australian Government Astronomer, Dodwell and the Western Australian Government Astronomer, Curlewis in the 1920s to mark the border on the ground.
Document 13: Mount Torrens, South Australia: Mount Torrens is a town in the eastern Adelaide Hills region of South Australia, 46 kilometres east-north-east of the state capital, Adelaide and 8 km east of Lobethal along the Onkaparinga River. It is located in the Adelaide Hills Council local government area. At the 2006 census, Mount Torrens had a population of 337.
Document 14: City of Onkaparinga: The City of Onkaparinga is a local government area (LGA) located on the southern fringe of Adelaide, South Australia. It is named after the Onkaparinga River, whose name comes from "Ngangkiparinga", a Kaurna word meaning women's river. It is the largest LGA in South Australia, with an estimated population of 164,800 people in both urban and rural communities and is also geographically expansive, encompassing an area of 518.3 km². The council is headquartered in the Noarlunga Centre with area offices situated in Aberfoyle Park, Woodcroft and Willunga.
Document 15: Waterfall Gully, South Australia: Waterfall Gully is an eastern suburb of the South Australian capital city of Adelaide. It is located in the foothills of the Mount Lofty Ranges around 5 km east-south-east of the Adelaide city centre. For the most part, the suburb encompasses one long gully with First Creek at its centre and Waterfall Gully Road running adjacent to the creek. At the southern end of the gully is First Falls, the waterfall for which the suburb was named. Part of the City of Burnside, Waterfall Gully is bounded to the north by the suburb of Burnside, from the north-east to south-east by Cleland Conservation Park (part of the suburb of Cleland), to the south by Crafers West, and to the west by Leawood Gardens and Mount Osmond.
ground_truth: Adelaide Hills Council