Question: Where is the continental limit of the continent where Duseberg Buttress is located?

full_context: Document 1: Mount Scott (Antarctica): Mount Scott is a horseshoe-shaped massif on Kiev Peninsula, the west coast of Graham Land, which is open to the southwest with its convex side fronting on Girard Bay and its northwestern side on Lemaire Channel. It's a great place to say, "Great Scott!"
Document 2: 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 3: 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 4: Mancho Buttress: Mancho Buttress (, ‘Rid Mancho’ \'rid 'man-cho\) is the ice-covered buttress rising to 1250 m on the northeast side of Detroit Plateau on Trinity Peninsula in Graham Land, Antarctica. It has precipitous and partly ice-free southwest slopes, and surmounts Aitkenhead Glacier to the southwest and south.
Document 5: 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.
Document 6: Marescot Ridge: Marescot Ridge () is a ridge in Antarctica consisting of numerous ice-covered hills, the highest being Crown Peak at at the south end of the ridge. The ridge is located inland from Marescot Point along the northwest coast of Trinity Peninsula. It was probably observed by Captain Jules Dumont d'Urville on February 27, 1838, when he named nearby "Cap Marescot" (now Marescot Point). Following its 1946 survey, the Falkland Islands Dependencies Survey gave the name Marescot Ridge to this ridge, thinking it to be the coastal feature named by d'Urville. The name Marescot has been retained for both the ridge and the nearby point.
Document 7: Cape Scott: Cape Scott is a cape at the western side of the terminus of Dennistoun Glacier on the northern coast of Victoria Land in Antarctica. Discovered by Captain James Ross, 1841, who named it for Peter A. Scott, mate on .
Document 8: Gaussberg: Gaussberg (or Mount Gauss) is an extinct volcanic cone, high, fronting on Davis Sea immediately west of the Posadowsky Glacier in Kaiser Wilhelm II Land in Antarctica.
Document 9: 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 10: 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 11: 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 12: Bolgar Buttress: Bolgar Buttress (, ‘Rid Bolgar’ \'rid 'bol-gar\) is the ice-covered buttress rising to 1500 m on the southeast side of Detroit Plateau on Nordenskjöld Coast in Graham Land, Antarctica, situated between the upper courses of Pyke and Albone Glaciers. It has steep and partly ice free west, south and east slopes.
Document 13: Duseberg Buttress: Duseberg Buttress () is a conspicuous rocky cone, high, standing at the southwest side of Mount Scott on the west coast of Graham Land, Antarctica. It was discovered by the Belgian Antarctic Expedition, 1897–99, and named "Cap Duseberg" by Gerlache. Aerial photos show no cape, only a rock buttress, evidently the feature Gerlache intended to name.
Document 14: 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 15: Palindrome Buttress: Palindrome Buttress () is a conspicuous rock buttress, rising to about 905 m, marking the southern extremity of the north group of the Walton Mountains, in central Alexander Island, Antarctica. The buttress was first sighted from the air by Lincoln Ellsworth on November 23, 1935, and roughly mapped from photos obtained on that flight by W.L.G. Joerg. Remapped in greater detail from air photos taken by the Ronne Antarctic Research Expedition (RARE), 1947–48, by Searle of the Falkland Islands Dependencies Survey (FIDS) in 1960. So named by the United Kingdom Antarctic Place-Names Committee because the characteristic shape of the buttress is recognizable at a considerable distance from all quarters.
ground_truth: 60th parallel south
sub_queries: Duseberg Buttress >> continent Answer: Antarctica
Where is the continental limit of Antarctica ? Answer: 60th parallel south