Question: Which Australian south-north railway has an end point in the smallest Australian capital city?

full_context: Document 1: Melbourne–Adelaide railway: The Melbourne–Adelaide railway is a standard gauge railway corridor that runs between the cities of Melbourne, Victoria and Adelaide, South Australia. Most of the current traffic is freight, though the only named and perhaps best known regular train is the twice-weekly passenger service "The Overland", operated by Great Southern Railways
Document 2: Darwin Correctional Centre: The Darwin Correctional Centre, an Australian minimum to maximum security prison for males and females, is approximately 30 km by road from Darwin, Northern Territory, Australia. The centre is managed by Northern Territory Department of Correctional Services, of the Government of the Northern Territory. The centre detains sentenced and charged felons under Northern Territory and/or Commonwealth law.
Document 3: Crime in the Northern Territory: Darwin has per capita the highest crime rate of any Australian city, while Alice Springs has the second highest crime rate of any Australian city (and the highest murder rate). Criminal activity is fought by the Northern Territory Police.
Document 4: 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 5: Brinkin, Northern Territory: Brinkin is a northern suburb of Darwin, the capital city of the Northern Territory, Australia. It is located 12 km north of Darwin's central business district, and is home to the Casuarina campus of Charles Darwin University (formerly Northern Territory University's campus).
Document 6: The Overland: The Overland is an Australian passenger train service between Melbourne and Adelaide. It first ran in 1887 as the "Adelaide Express", but South Australians have always referred to the train as the "Melbourne Express". It was given its current name in 1926. Now operated by private company Great Southern Rail, the train completes two return trips a week covering 828 kilometres between the state capitals. Originally an overnight train, it now operates during the day.
Document 7: South Australian Railways East-West Stock: This article outlines the history of the 24 Corten steel vehicles with corrugated sides, constructed by the South Australian Railways and primarily used on the East-West Express from Adelaide to Port Pirie. The South Australian Railways broad gauge system had been extended north in 1937 to meet a southern extension from Port Augusta on the Commonwealth Railways' standard gauge system, creating Port Pirie as a break-of-gauge and transshipment point. To encourage passengers to use the line despite the inconvenience of changing trains, in 1947 the Cafeteria Car was constructed and used on the services to and from Adelaide, in conjunction with the mid-1930s Steel carriage fleet. In 1964 the first airconditioned sitting cars entered regular service on the East-West Express, and construction of those continued through to 1967 with a total of nine sitting cars and fourteen vans.
Document 8: Southern Aurora: The Southern Aurora was an overnight express passenger train that operated between Australia's two largest cities, Sydney and Melbourne. First-class throughout, including the dining facilities, the "Southern Aurora" featured all-sleeper accommodation. The train first ran on 16 April 1962 after the opening of the North East standard gauge line from Melbourne to Albury, eliminating the break-of-gauge between the capital cities.
Document 9: Darwin, Northern Territory: is the capital city of the Northern Territory of Australia. Situated on the Timor Sea, Darwin is the largest city in the sparsely populated Northern Territory, with a population of 142,300. It is the smallest and most northerly of the Australian capital cities, and acts as the Top End's regional centre.
Document 10: New Year Island (Northern Territory): New Year Island is an low-lying, uninhabited island in the Arafura Sea. It is part of the Northern Territory of Australia, and is 294 km north-east of Darwin, and 50 km east of Croker Island. It is approximately 2 km long, and 800 metres wide.
Document 11: Parliament House, Darwin: Parliament House in Darwin is Australia's newest Parliament Building, it has been the seat of the Northern Territory Legislative Assembly since 1994. Parliament House is located on State Square in the centre of Darwin, which is also the administrative centre of the Northern Territory law and government. It features Post modern features. The Northern Territory Library is housed in Parliament House.Construction of Parliament House began in 1990, and the building was completed in 1994, and officially opened by the Governor-General of Australia, Bill Hayden on 18 August 1994. Before Parliament House the former Northern Territory Legislative Council established in 1948 was housed in various temporary buildings around Darwin. After 1974 the Northern Territory Legislative Assembly continued to operate on the same basis, and settled in buildings on the current location until 1990 when they were demolished to allow commencement of the construction of Parliament House. From 1990 to the end of 1994, the Assembly temporarily met in the Chan Building.
Document 12: Adelaide–Darwin railway: The Adelaide–Darwin railway is a south-north transcontinental railway in Australia, between the cities of Adelaide, South Australia and Darwin, Northern Territory. Between 2000-2004 the line was extended from Alice Springs to Darwin as a Build, Own, Operate and Transfer back (BOOT) project by the AustralAsia Rail Corporation. This replaced the former narrow gauge line from Darwin to Larrimah and the narrow gauge/standard gauge Central Australia Railway from Port Augusta to Alice Springs which used a different route up to 200 km to the east.
Document 13: Palmerston, Northern Territory: Palmerston is a planned satellite city of Darwin, the capital and largest city in Australia's Northern Territory. Palmerston is situated near Darwin Harbour and had a population of 27,618 at the 2011 census, making it the second largest city in the sparsely populated Northern Territory. Palmerston is currently the fastest growing city in the Northern Territory and has briefly in the past held the title of the fastest growing city in Australia.
Document 14: Darwin City, Northern Territory: Darwin City (referred to as "Darwin city centre" or "The CBD" (Central Business District) is a suburb surrounded by metropolitan Darwin which comprises the original settlement, the central business district, parkland and other built-up areas. It is the oldest part of Darwin and includes many of the city's important institutions and landmarks, such as Parliament, Government House, the Northern Territory Supreme Court, Bicentennial Park and the George Brown Darwin Botanic Gardens. The city centre is located in the local government areas of the City of Darwin.
Document 15: Sydney–Melbourne rail corridor: The Sydney–Melbourne rail corridor is an approximately 960 km standard gauge railway corridor that runs between Melbourne and Sydney, the two largest cities in Australia. Freight and passenger services operate along the route, such as the NSW TrainLink XPT passenger service. The XPT offers a day and night service in each direction.
ground_truth: Adelaide–Darwin railway