Question: Which part of Argentine's national territory is an ice-covered mountainous island off the coast of Antarctica?

full_context: Document 1: Elephant Island: Elephant Island is an ice-covered mountainous island off the coast of Antarctica in the outer reaches of the South Shetland Islands, in the Southern Ocean. Its name was given by early explorers sighting elephant seals on its shores. The island is situated 245 km north-northeast of the tip of the Antarctic Peninsula, 1,253 km westsouthwest of South Georgia, 935 km south of the Falkland Islands, and 885 km southeast of Cape Horn. It is within the Antarctic claims of Argentina, Chile and the UK. Brazil has a shelter on the island, Goeldi, supporting the work of up to six researchers each during the summer. and another (Wiltgen), which was dismantled in the summer of 1997/98.
Document 2: Prime Seal Island: Prime Seal Island is a long island, with a high central ridge and an area of 1220 ha, in south-eastern Australia. It is part of Tasmania’s Prime Seal Island Group, lying in eastern Bass Strait west of Flinders in the Furneaux Group. Geologically, it is limestone overlying granite and has notable karst features, including caves. It is leased for farming and is extensively grazed by sheep and cattle as well as the native Tasmanian pademelons.
Document 3: King Edward Point: King Edward Point (also known as KEP) is the capital of South Georgia and the South Sandwich Islands, on the northeastern coast of the island of South Georgia. It is located at in Cumberland East Bay. It is sometimes confusingly referred to as Grytviken, which is the site of the disused whaling station, nearby at the head of King Edward Cove.
Document 4: Seal Islands (South Shetland Islands): The Seal Islands (also known as Îles des Phoques, Islas Foca, Islotes Foca and Seal Rocks) are a group of small islands and rocky islets lying about 7 km north and north-west of Elephant Island, in the South Shetland Islands of Antarctica. They extend east–west for about 5 km, and are separated from Elephant Island by Sealers Passage. The group takes its name from the largest island, which Captain William Smith named Seal Island in 1820 because of the number of seals killed there.
Document 5: Antarctica: The Battle for the Seventh Continent: Antarctica: The Battle for the Seventh Continent is a 2016 book by Doaa Abdel-Motaal is book discussing the complexities of territorial claims on Antarctica and the agreements surrounding the continent. The book critiques the existing treaties and then explores different alternative to find a peaceful resolution to the problems posed by Antarctica's unique situation.
Document 6: Argentina: Argentina ( ; ] ), officially the Argentine Republic (Spanish: "República Argentina" ), is a federal republic in the southern portion of South America. Sharing the bulk of the Southern Cone with its neighbor Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of 2780400 km2 , Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into twenty-three provinces (Spanish: "provincias" , singular "provincia") and one autonomous city ("ciudad autónoma"), Buenos Aires, which is the federal capital of the nation (Spanish: "Capital Federal" ) as decided by Congress.
Document 7: Tristan da Cunha: Tristan da Cunha ( ), colloquially Tristan, is the name of both a remote group of volcanic islands in the south Atlantic Ocean and the main island of that group. It is the most remote inhabited archipelago in the world, lying 2000 km from the nearest inhabited land, Saint Helena, and 2400 km from the nearest continental land, South Africa. It is 3360 km from South America. The territory consists of the main island, named Tristan da Cunha, which has a north–south length of 11.27 km and an area of 98 km2 , along with the smaller, uninhabited Nightingale Islands and the wildlife reserves of Inaccessible and Gough islands. As of January 2017, the main island has 262 permanent inhabitants. The other islands are uninhabited, except for the personnel of a weather station on Gough Island.
Document 8: Argentine Antarctica: Argentine Antarctica (Spanish: "Antártida Argentina, Sector Antártico Argentino or Argentártida" ) is a sector of Antarctica claimed by Argentina as part of its national territory consisting of the Antarctic Peninsula and a triangular section extending to the South Pole, delimited by the 25° West and 74° West meridians and the 60° South parallel. This region overlaps with British and Chilean claims in Antarctica; however, all claims are suspended by the Antarctic Treaty System, of which Argentina is a founding signatory and permanent consulting member, with the Antarctic Treaty Secretariat being based in Buenos Aires.
Document 9: Patagonia: Patagonia (] ) is a sparsely populated region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, pampas and grasslands east of this southern portion of the Andes. Patagonia has two coasts: western facing the Pacific Ocean and eastern facing the Atlantic Ocean.
Document 10: Argentina–Chile relations: Argentina–Chile relations refers to interstate relations between the Republic of Chile and the Argentine Republic. Argentina and Chile share the world's third-longest international border, which is 5300 km long and runs from north to the south along the Andes mountains. Although gaining their independence during the South American wars of liberation, during much of the 19th and the 20th century relations between the countries were chilled as a result of disputes over the border in Patagonia. In recent years relations have improved dramatically. Despite increased trade between the two countries, Argentina and Chile have followed quite different economic policies. Chile has signed free trade agreements with countries such as China, the USA, Canada, South Korea and the EU and is an active member of the APEC, while Argentina belongs to the Mercosur regional free trade area. Both countries are members of the Union of South American Nations.
Document 11: Neighbourhoods of Buenos Aires: Buenos Aires, autonomous city and capital of Argentina, is composed of forty-eight neighbourhoods (locally known as barrios). The city is also legally divided into communes, each one including one or more "barrios". Among the most visited and populated "barrios" are Palermo, Recoleta, Puerto Madero, Belgrano, San Telmo, La Boca, Monserrat and Caballito. Sectors of the city are also traditionally known as neighborhoods by the inhabitants of Buenos Aires, but not officially by the authorities of the city; some examples include Chinatown, Barrio Norte and the Microcentro.
Document 12: Robertson Island: Robertson Island is an ice-covered island, 21 km long in a northwest-southeast direction and 10 km wide, lying at the east end of the Seal Nunataks off the east coast of the Antarctic Peninsula. Captain Carl Anton Larsen discovered Robertson Island from the "Jason" on December 9, 1893. Curious to find out if the volcano was active he skied to the top from the north side of the island, later naming it Mt. Christensen after his longtime partner and majority owner of the "Jason", Christen Christensen. Larsen named Robertson Island for William Robertson, co-owner of Woltereck and Robertson.
Document 13: Antarctic realm: Antarctica is one of eight terrestrial biogeographic realms. The ecosystem includes Antarctica and several island groups in the southern Atlantic and Indian Oceans. The continent of Antarctica is so cold and dry that it has supported only 2 vascular plants for millions of years, and its flora presently consists of around 250 lichens, 100 mosses, 25-30 liverworts, and around 700 terrestrial and aquatic algal species, which live on the areas of exposed rock and soil around the shore of the continent. Antarctica's two flowering plant species, the Antarctic hair grass ("Deschampsia antarctica") and Antarctic pearlwort ("Colobanthus quitensis"), are found on the northern and western parts of the Antarctic Peninsula. Antarctica is also home to a diversity of animal life, including penguins, seals, and whales.
Document 14: Ascension Island: Ascension Island is an isolated volcanic island in the equatorial waters of the South Atlantic Ocean, around 1600 km from the coast of Africa and 2250 km from the coast of Brazil, which is roughly midway between the horn of South America and Africa. It lies 7°56' South of the Equator. It is governed as part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, of which the main island, Saint Helena, is around 1300 km to the southeast. The territory also includes the sparsely populated Tristan da Cunha archipelago, some 3730 km to the south, about halfway to the Antarctic Circle.
Document 15: Buenos Aires: Buenos Aires ( or ; ] ) is the capital and most populous city of Argentina. The city is located on the western shore of the estuary of the Río de la Plata, on the South American continent's southeastern coast. "Buenos aires" can be translated as "fair winds" or "good airs", but the first one was the meaning intended by the founders in the 16th century, by the use of the original name "Real de Nuestra Señora Santa María del Buen Ayre". The Greater Buenos Aires conurbation, which also includes several Buenos Aires Province districts, constitutes the fourth-most populous metropolitan area in the Americas, with a population of around 17 million.
ground_truth: Argentine Antarctica