Question: On what continent can the country that contains Niuas be found?

full_context: Document 1: Assistant Secretary of State for East Asian and Pacific Affairs: The Assistant Secretary of State for East Asian and Pacific Affairs is the head of the Bureau of East Asian and Pacific Affairs within the United States Department of State. The Assistant Secretary guides operation of the U.S. diplomatic establishment in the countries of the Asia - Pacific region and advises the Secretary of State and the Under Secretary for Political Affairs on matters relating to the area. The last permanent Assistant Secretary was Daniel R. Russel, who left on March 8, 2017. Susan Thornton is now Acting Assistant Secretary.
Document 2: Pacific War: The official policy of the U.S. Government is that Thailand was not an ally of the Axis, and that the United States was not at war with Thailand. The policy of the U.S. Government ever since 1945 has been to treat Thailand not as a former enemy, but rather as a country which had been forced into certain actions by Japanese blackmail, before being occupied by Japanese troops. Thailand has been treated by the United States in the same way as such other Axis-occupied countries as Belgium, Czechoslovakia, Denmark, Greece, Norway, Poland, and the Netherlands.
Document 3: Kiribati: Kiribati maintains close relations with its Pacific neighbours, Australia, New Zealand, Republic of China (Taiwan), Japan and Fiji. The first three of these provide the majority of the country's foreign aid. Taiwan and Japan also have specified-period licences to fish in Kiribati's waters. There are four resident diplomatic missions headquartered in Kiribati: the Embassies of the Republic of China (Taiwan) and Cuba and the High Commissions of Australia and New Zealand.
Document 4: Tuvalu: From 1974 (the creation of the British colony of Tuvalu) until independence, the legislative body of Tuvalu was called the House of the Assembly or Fale I Fono. Following independence in October 1978 the House of the Assembly was renamed the Parliament of Tuvalu or Palamene o Tuvalu. The unicameral Parliament has 15 members with elections held every four years. The members of parliament select the Prime Minister (who is the head of government) and the Speaker of Parliament. The ministers that form the Cabinet are appointed by the Governor General on the advice of the Prime Minister.
Document 5: Niuas Nobles' constituency: Niuas is an electoral constituency which sends one representative to the Legislative Assembly of Tonga. It covers the islands of Niuafoʻou and Niuatoputapu.
Document 6: Royal Palace, Tonga: The Royal Palace of the Kingdom of Tonga is located in the northwest of the capital, Nukualofa, close to the Pacific Ocean. The wooden Palace, which was built in 1867, is the official residence of the King of Tonga. Although the Palace is not open to the public, it is easily visible from the waterfront.
Document 7: Niulakita: Niulakita is the southernmost island of Tuvalu, and also the name of the only village on this island. Niulakita has a population of 27 (2012 census). The residents of Niulakita have moved to the island from Niutao. Niulakita is represented in the Parliament of Tuvalu by the members of the constituency of Niutao.
Document 8: Samoa: The unicameral legislature (the Fono) consists of 49 members serving 5-year terms. Forty-seven are matai title-holders elected from territorial districts by Samoans; the other two are chosen by non-Samoans with no chiefly affiliation on separate electoral rolls. Universal suffrage was adopted in 1990, but only chiefs (matai) may stand for election to the Samoan seats. There are more than 25,000 matais in the country, about 5% of whom are women. The prime minister, chosen by a majority in the Fono, is appointed by the head of state to form a government. The prime minister's choices for the 12 cabinet positions are appointed by the head of state, subject to the continuing confidence of the Fono.
Document 9: Tuvalu: Tuvalu participates in the work of Secretariat of the Pacific Community, or SPC (sometimes Pacific Community) and is a member of the Pacific Islands Forum, the Commonwealth of Nations and the United Nations. Tuvalu has maintained a mission at the United Nations in New York City since 2000. Tuvalu is a member of the World Bank and the Asian Development Bank. On 18 February 2016 Tuvalu signed the Pacific Islands Development Forum Charter and formally joined the Pacific Islands Development Forum (PIDF).
Document 10: 2003 Niutao by-election: A by-election was held in the Niutao constituency in Tuvalu on 5 May 2003. It was triggered by the death of the incumbent MP, Saloa Tauia. Tauia, the Speaker of Parliament, died in February, after having entered Parliament in the July 2002 general election.
Document 11: Marshall Islands: Legislative power lies with the Nitijela. The upper house of Parliament, called the Council of Iroij, is an advisory body comprising twelve tribal chiefs. The executive branch consists of the President and the Presidential Cabinet, which consists of ten ministers appointed by the President with the approval of the Nitijela. The twenty-four electoral districts into which the country is divided correspond to the inhabited islands and atolls. There are currently four political parties in the Marshall Islands: Aelon̄ Kein Ad (AKA), United People's Party (UPP), Kien Eo Am (KEA) and United Democratic Party (UDP). Rule is shared by the AKA and the UDP. The following senators are in the legislative body:
Document 12: Near East: The Foreign and Commonwealth Office of United Kingdom recognises a Middle East and North Africa region, but not a Near East. Their original Middle East consumed the Near East as far as the Red Sea, ceded India to the Asia and Oceania region, and went into partnership with North Africa as far as the Atlantic.
Document 13: Oceania: Biogeographically, as a synonym for the Australasian ecozone and the Pacific ecozone (Melanesia, Polynesia, and Micronesia), with New Zealand forming the south - western corner of the Polynesian Triangle. To note, New Zealand may also be considered part of Australasia, despite being traditionally part of Polynesia. As an ecozone, Oceania includes all of Micronesia, Fiji, and all of Polynesia except New Zealand. New Zealand, along with New Guinea and nearby islands, part of the Philippine islands, Australia, the Solomon Islands, Vanuatu, and New Caledonia, constitute the separate Australasian ecozone. In the geopolitical conception used by the United Nations, International Olympic Committee, and many atlases, Oceania includes Australia and the nations of the Pacific from Papua New Guinea east, but not Indonesian New Guinea.
Document 14: Norfolk Island: The Assembly consisted of nine seats, with electors casting nine equal votes, of which no more than two could be given to any individual candidate. It is a method of voting called a "weighted first past the post system". Four of the members of the Assembly formed the Executive Council, which devised policy and acted as an advisory body to the Administrator. The last Chief Minister of Norfolk Island was Lisle Snell. Other ministers included: Minister for Tourism, Industry and Development; Minister for Finance; Minister for Cultural Heritage and Community Services; and Minister for Environment.
Document 15: Tonga: Tonga's foreign policy has been described by Matangi Tonga as "Look East"—specifically, as establishing closer diplomatic and economic relations with Asia (which actually lies to the north-west of the Pacific kingdom). Tonga retains cordial relations with the United States. Although it remains on good terms with the United Kingdom, the two countries do not maintain particularly close relations, and the United Kingdom closed its High Commission in Tonga in 2006. Tonga's relations with Oceania's regional powers, Australia and New Zealand, are good.
ground_truth: Oceania
sub_queries: Niuas >> country Answer: Tonga
On what continent can Tonga be found? Answer: Oceania