Question: The Ducie River is a river located in a state with an area of how many km?

full_context: Document 1: Western Australia: Western Australia (abbreviated as WA ) is a state occupying the entire western third of Australia. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Southern Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east. Western Australia is Australia's largest state with a total land area of 2,529,875 square kilometres (976,790 sq mi), and the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic – however, a significant part of it is sparsely populated. The state has about 2.6 million inhabitants, around 11% of the national total. Ninety-two per cent of the population lives in the south-west corner of the state.
Document 2: Sunshine Coast, Queensland: Sunshine Coast is a peri-urban area and the third most populated area in the Australian state of Queensland. Located 100 km north of the state capital Brisbane in South East Queensland on the Pacific Ocean coastline, its urban area spans approximately 60 km of coastline and hinterland from Pelican Waters to Tewantin. The estimated urban population of Sunshine Coast as at June 2015 was 302,122, making it the 9th most populous in the country.
Document 3: Lane Cove River: The Lane Cove River, a northern tributary of the Parramatta River, is a tide-dominated, drowned valley estuary west of Sydney Harbour, located in Sydney, New South Wales, Australia. The river is a tributary of the Parramatta River, winding through a bushland valley. It joins Parramatta River at Greenwich and Woolwich, where together they form an arm of Sydney Harbour.
Document 4: Ducie River: The Ducie River is a river located on the Cape York Peninsula in Far North Queensland, Australia.
Document 5: Gold Coast, Queensland: The Gold Coast is a coastal area in the Australian state of Queensland, approximately 66 km south-southeast of the state capital Brisbane and immediately north of the border with New South Wales. With a census-estimated 2016 population of 638,090, The Gold Coast is the sixth-largest city in Australia, making it the largest non-capital city, and the second-largest city in Queensland.
Document 6: Georges River: The Georges River, formerly known as Tucoerah River, is an intermediate tide dominated drowned valley estuary, located to the south and west of Sydney, New South Wales, Australia.
Document 7: Araluen Creek: Araluen Creek, a partly perennial stream of the Moruya River catchment, is located in the Southern Tablelands and South Coast regions of New South Wales, Australia.
Document 8: Sturt River: The Sturt River, also known as the Sturt Creek and Warri Parri in the Kaurna language, is a river located in the Adelaide region of the Australian state of South Australia.
Document 9: Cooks River: The Cooks River, a semi-mature tide dominated drowned valley estuary, is a tributary of Botany Bay, located in south-eastern Sydney, New South Wales, Australia.
Document 10: Australia: Australia ( , , ), officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands. It is the largest country in Oceania and the world's sixth-largest country by total area. The neighbouring countries are Papua New Guinea, Indonesia and East Timor to the north; the Solomon Islands and Vanuatu to the north-east; and New Zealand to the south-east. Australia's capital is Canberra, and its largest urban area is Sydney.
Document 11: Queensland: Queensland (abbreviated as QLD, or less frequently Q) is the second-largest and third-most-populous state in the Commonwealth of Australia. Situated in the north-east of the country, it is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean. The state is the world's sixth largest sub-national entity, with an area of 1,852,642 km.
Document 12: Clyde River (New South Wales): The Clyde River (Aboriginal: "Bhundoo") is an open intermediate tide dominated drowned valley estuary; or perennial river that flows into the Tasman Sea, located in the South Coast region of New South Wales, Australia.
Document 13: Brisbane: Brisbane ( ) is the capital of and most populous city in the Australian state of Queensland, and the third most populous city in Australia. Brisbane's metropolitan area has a population of 2.4 million, and the South East Queensland region, centred on Brisbane, encompasses a population of more than 3.5 million. The Brisbane central business district stands on the original European settlement and is situated inside a bend of the Brisbane River, about 15 km from its mouth at Moreton Bay. The metropolitan area extends in all directions along the floodplain of the Brisbane River Valley between Moreton Bay and the Great Dividing Range, sprawling across several of Australia's most populous local government areas (LGAs), most centrally the City of Brisbane, which is by far the most populous LGA in the nation. The demonym of Brisbane is Brisbanite.
Document 14: South East Queensland: South East Queensland (SEQ) is a bio-geographical, political, and administrative region of the state of Queensland in Australia, which contains 3.4 million people out of the state's population of 4.8 million. The area covered by South East Queensland varies, depending on the definition of the region, though it tends to include Queensland's three largest cities: the capital city Brisbane; the Gold Coast; and the Sunshine Coast. Its most common use is for political purposes, and covers 22420 km2 and incorporates 11 local government areas, extending 240 km from Noosa in the north to the Gold Coast and New South Wales border in the south (some sources include Tweed Heads (NSW) which is contiguous as an urban area with Brisbane/Gold Coast), and 140 km west to Toowoomba (which is simultaneously considered part of the Darling Downs region).
Document 15: New South Wales: New South Wales (abbreviated as NSW) is a state on the east coast of :Australia. It borders Queensland to the north, Victoria to the south, and South Australia to the west. Its coast borders the Tasman Sea to the east. The Australian Capital Territory is an enclave within the state. New South Wales' state capital is Sydney, which is also Australia's most populous city. In March 2014 , the estimated population of New South Wales was 7.5 million, making it Australia's most populous state. Just under two-thirds of the state's population, 4.67 million, live in the Greater Sydney area. Inhabitants of New South Wales are referred to as "New South Welshmen".
ground_truth: 1,852,642