Question: Where is the continental limit of the continent where Vitosha Saddle is located?

full_context: Document 1: Paisiy Peak: Paisiy Peak (Vrah Paisiy \'vr&h pa-'i-siy\) rises to approximately 550 m in the Delchev Ridge, Tangra Mountains, eastern Livingston Island in the South Shetland Islands, Antarctica surmounting Sopot Ice Piedmont to the north and east.
Document 2: Emilio Palma: Emilio Marcos Palma (born 7 January 1978) is an Argentine man known for being the first documented person born on the continent of Antarctica.
Document 3: Antarctica: New claims on Antarctica have been suspended since 1959 although Norway in 2015 formally defined Queen Maud Land as including the unclaimed area between it and the South Pole. Antarctica's status is regulated by the 1959 Antarctic Treaty and other related agreements, collectively called the Antarctic Treaty System. Antarctica is defined as all land and ice shelves south of 60° S for the purposes of the Treaty System. The treaty was signed by twelve countries including the Soviet Union (and later Russia), the United Kingdom, Argentina, Chile, Australia, and the United States. It set aside Antarctica as a scientific preserve, established freedom of scientific investigation and environmental protection, and banned military activity on Antarctica. This was the first arms control agreement established during the Cold War.
Document 4: St. Evtimiy Crag: St. Evtimiy Crag (Sv. Evtimiev Kamak \sve-'ti ev-'ti-mi-ev 'ka-m&k\) is a rocky peak of elevation 350 m in Delchev Ridge, Tangra Mountains, Livingston Island in the South Shetland Islands, Antarctica surmounting Dobrudzha Glacier to the southwest, Ropotamo Glacier to the northeast and Yantra Cove to the east.
Document 5: Vitosha Saddle: Vitosha Saddle (Vitoshka Sedlovina \'vi-tosh-ka se-dlo-vi-'na\) is a narrow ice-covered saddle of elevation 1050 m extending in southwest-northeast direction between Great Needle Peak (Falsa Aguja Peak) and Vihren Peak in the Levski Ridge of Tangra Mountains, eastern Livingston Island in the South Shetland Islands, Antarctica. The saddle is part of the divide between the glacial catchments of Huron Glacier to the north and Magura Glacier to the south.
Document 6: Willan Saddle: Willan Saddle (Sedlovina Willan \se-dlo-vi-'na 'wi-l&n\) is a flat, crescent-shaped and ice-covered saddle extending 1 km in the northeast-southwest direction between Burdick South Peak and Willan Nunatak in eastern Livingston Island in the South Shetland Islands, Antarctica. The saddle has an elevation of 400 m and is part of the overland route between Balkan Snowfield and Charrúa Gap in the west and Orpheus Gate in the east, thus providing access from the Bulgarian Base and the Spanish Base to the interior of eastern Livingston Island.
Document 7: Antarctic Peninsula: The Antarctic Peninsula, known as O'Higgins Land in Chile, Tierra de San Martin in Argentina, and originally known as the Palmer Peninsula in the US and as Graham Land in Great Britain, is the northernmost part of the mainland of Antarctica, located at the base of the Southern Hemisphere.
Document 8: Leslie Gap: Leslie Gap (Sedlovina Leslie \se-dlo-vi-'na 'les-li\) is a 359m high ice-covered saddle extending 2.8 km in south-north direction between Leslie Hill and Radnevo Peak on Varna Peninsula in northeastern Livingston Island in the South Shetland Islands, Antarctica. The saddle separates the glacial catchments of Kaliakra Glacier to the east and Saedinenie Snowfield to the west. It is part of the overland route from Bowles Ridge to Vidin Heights. The south extremity of the saddle features a minor but conspicuous ice-covered knoll of elevation 404 m just north of Leslie Hill. Leslie Gap takes its name from the adjacent Leslie Hill and was first trekked by the Bulgarian Lyubomir Ivanov from Camp Academia on 25 December 2004.
Document 9: Paril Saddle: Paril Saddle (Parilska Sedlovina \pa-'ril-ska se-dlo-vi-'na\) is a saddle of elevation 1398 m in Friesland Ridge in Tangra Mountains on Livingston Island, Antarctica. Bounded by St. Boris Peak to the northeast, and Simeon Peak to the southwest. Overlooking Macy Glacier to the east and southeast, and Huntress Glacier to the west and northwest. Bulgarian topographic survey in 1995/96 (estimated elevation 1390 m), and mapping in 2005 and 2009. It was first visited and GPS-surveyed by the Bulgarian climbers D. Boyanov, N. Petkov and N. Hazarbasanov on 15 January 2017.
Document 10: Antarctica: Several governments maintain permanent manned research stations on the continent. The number of people conducting and supporting scientific research and other work on the continent and its nearby islands varies from about 1,000 in winter to about 5,000 in the summer, giving it a population density between 70 and 350 inhabitants per million square kilometres (180 and 900 per million square miles) at these times. Many of the stations are staffed year-round, the winter-over personnel typically arriving from their home countries for a one-year assignment. An Orthodox church—Trinity Church, opened in 2004 at the Russian Bellingshausen Station—is manned year-round by one or two priests, who are similarly rotated every year.
Document 11: Vaptsarov Peak: Vaptsarov Peak (Vaptsarov Vrah \vap-'tsa-rov 'vr&h\) rises to approximately 410 m in Delchev Ridge, Tangra Mountains, eastern Livingston Island in the South Shetland Islands, Antarctica. The peak has steep and ice free western slopes, and surmounts Ihtiman Hook to the northwest and Sopot Ice Piedmont to the east, north and west.
Document 12: Sopot Ice Piedmont: Sopot Ice Piedmont (Lednik Sopot \'led-nik 'so-pot\) is situated on Burgas Peninsula, Livingston Island in the South Shetland Islands, Antarctica, northeast of Iskar Glacier and north of Ropotamo, Strandzha and Pautalia Glaciers. It extends 7.5 km in east-west direction and 2.4 km in south-north direction, drains the northern slopes of Delchev Ridge east of Delchev Peak and Ghiaurov Peak, and flows northward into Moon Bay between Rila Point to the west and Malyovitsa Crag near Renier Point to the east.
Document 13: Antarctica: Emilio Marcos Palma was the first person born south of the 60th parallel south (the continental limit according to the Antarctic Treaty), as well as the first one born on the Antarctic mainland, in 1978 at Base Esperanza, on the tip of the Antarctic Peninsula; his parents were sent there along with seven other families by the Argentine government to determine if the continent was suitable for family life. In 1984, Juan Pablo Camacho was born at the Frei Montalva Station, becoming the first Chilean born in Antarctica. Several bases are now home to families with children attending schools at the station. As of 2009, eleven children were born in Antarctica (south of the 60th parallel south): eight at the Argentine Esperanza Base and three at the Chilean Frei Montalva Station.
Document 14: Chileans: Though the majority of Chileans reside in Chile, significant communities have been established in multiple countries, most noticeably Argentina, United States, Australia and Canada and countries of the European Union. Although small in number, Chilean people also make up a substantial part of the permanent population of Antarctica and the Falkland Islands (see: Chileans in the Falkland Islands).
Document 15: Antarctica: The first semi-permanent inhabitants of regions near Antarctica (areas situated south of the Antarctic Convergence) were British and American sealers who used to spend a year or more on South Georgia, from 1786 onward. During the whaling era, which lasted until 1966, the population of that island varied from over 1,000 in the summer (over 2,000 in some years) to some 200 in the winter. Most of the whalers were Norwegian, with an increasing proportion of Britons. The settlements included Grytviken, Leith Harbour, King Edward Point, Stromness, Husvik, Prince Olav Harbour, Ocean Harbour and Godthul. Managers and other senior officers of the whaling stations often lived together with their families. Among them was the founder of Grytviken, Captain Carl Anton Larsen, a prominent Norwegian whaler and explorer who, along with his family, adopted British citizenship in 1910.
ground_truth: 60th parallel south
sub_queries: Vitosha Saddle >> continent Answer: Antarctica
Where is the continental limit of Antarctica ? Answer: 60th parallel south