Question: What latitude is defined as being the border of the continent where Holoviak Glacier is located?

full_context: Document 1: Holmes Hills: The Holmes Hills () are a group of ridges and nunataks rising to about between Runcorn Glacier and Beaumont Glacier, bounded to the southwest by the Brennecke Nunataks, in south-central Palmer Land, Antarctica. They were mapped by the United States Geological Survey from aerial photographs taken by the U.S. Navy, 1966–69, and surveyed by the British Antarctic Survey, 1972–73. In association with the names of continental drift scientists grouped in this area, the hills were named by the Advisory Committee on Antarctic Names in 1978 after Scottish geologist Arthur Holmes, Professor of Geology at the University of Edinburgh, 1943–56.
Document 2: Australian Antarctic Data Centre: Article III.1.c of the Antarctic Treaty states that "to the greatest extent feasible and practicable" ... "scientific observations and results from Antarctica shall be exchanged and made freely available"
Document 3: Moran Glacier: Moran Glacier () is a glacier 10 nautical miles (18 km) long, joined at the south side by Walter Glacier, flowing east into Schokalsky Bay, situated in the northeast portion of Alexander Island, Antarctica. Photographed from the air by Ronne Antarctic Research Expedition (RARE), 1947–48, and surveyed by Falkland Islands Dependencies Survey (FIDS), 1948-50. Named by Advisory Committee on Antarctic Names (US-ACAN) for Commander Clifford D. Moran, U.S. Navy, aircraft pilot, Squadron VXE-6, U.S. Navy Operation Deep Freeze, 1966 and 1977.
Document 4: 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 5: Wilkes Land: Wilkes Land is a large district of land in eastern Antarctica, formally claimed by Australia as part of the Australian Antarctic Territory, though the validity of this claim has been placed for the period of the operation of the Antarctic Treaty, to which Australia is a signatory. It fronts on the southern Indian Ocean between Queen Mary Coast and Adelie Land, extending from Cape Hordern in 100°31' E to Pourquoi Pas Point, in 136°11' E. The region extends as a sector about 2600 km towards the South Pole, with an estimated land area of 2,600,000 km², mostly glaciated. It is further subdivided in the following coastal areas which can also be thought of as sectors extending to the South Pole:
Document 6: Hollingsworth Glacier: Hollingsworth Glacier () is a broad glacier of low gradient, draining the vicinity east of the Ricker Hills and flowing northeast to enter David Glacier just east of the Trio Nunataks, in Victoria Land, Antarctica. It was mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1956–62, and was named by the Advisory Committee on Antarctic Names for Jerry L. Hollingsworth, a meteorologist with the South Pole Station winter party in 1966.
Document 7: Gluck Peak: Gluck Peak () is a rock peak, high, located south-southwest of Mount Borodin and immediately north of Alyabiev Glacier, lying between the bases of Bennett Dome and Shostakovich Peninsula on south side of the Beethoven Peninsula, southwest Alexander Island, Antarctica. It was first mapped from air photos taken by the Ronne Antarctic Research Expedition, 1947–48, by D. Searle of the Falkland Islands Dependencies Survey in 1960, and was named by the UK Antarctic Place-Names Committee after Christoph Willibald von Gluck, the Austrian composer (1714-1787).
Document 8: National Antarctic Program: Till date 48 countries have signed the Antarctic Treaty which was drafted and negotiated back in 1959. Out of these, only 28 countries have the Consultative status i.e. these Parties have the right to participate in Antarctic Treaty Consultative Meetings (ATCM) and are accordingly known as Consultative Parties and their presence in Antarctica is shown by carrying substantial research there.
Document 9: George Glacier: George Glacier is a valley glacier in the western part of the Anare Mountains of Victoria Land, Antarctica. The glacier rises east of Mount Burch and flows northwest past Mount Kelly to Lillie Glacier Tongue on the coast. This geographical feature was first mapped by the United States Geological Survey from surveys and U.S. Navy air photos, 1960–1965, and was named by the Advisory Committee on Antarctic Names for Robert Y. George, a zoologist at McMurdo Station, Hut Point Peninsula, Ross Island, 1967–1968. The glacier is situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.
Document 10: Antarctica: In 1983, the Antarctic Treaty Parties began negotiations on a convention to regulate mining in Antarctica. A coalition of international organizations launched a public pressure campaign to prevent any minerals development in the region, led largely by Greenpeace International, which established its own scientific station—World Park Base—in the Ross Sea region and conducted annual expeditions to document environmental effects of humans on Antarctica. In 1988, the Convention on the Regulation of Antarctic Mineral Resources (CRAMRA) was adopted. The following year, however, Australia and France announced that they would not ratify the convention, rendering it dead for all intents and purposes. They proposed instead that a comprehensive regime to protect the Antarctic environment be negotiated in its place. The Protocol on Environmental Protection to the Antarctic Treaty (the "Madrid Protocol") was negotiated as other countries followed suit and on 14 January 1998 it entered into force. The Madrid Protocol bans all mining in Antarctica, designating Antarctica a "natural reserve devoted to peace and science".
Document 11: Holoviak Glacier: Holoviak Glacier () is a glacier flowing west into the head of Mendelssohn Inlet, facing towards the Wilkins Ice Shelf on the north side of the Beethoven Peninsula, lying in the southwestern portion of Alexander Island, Antarctica. It was mapped by the United States Geological Survey from U.S. Navy aerial photographs taken 1967–68 and from Landsat imagery taken 1972–73, and was named by the Advisory Committee on Antarctic Names for Judy C. Holoviak, technical editor, 1964–77, of the Antarctic Research Series, published by the American Geophysical Union, and director of publications for the Union from 1978.
Document 12: Antarctica: The Protocol on Environmental Protection to the Antarctic Treaty (also known as the Environmental Protocol or Madrid Protocol) came into force in 1998, and is the main instrument concerned with conservation and management of biodiversity in Antarctica. The Antarctic Treaty Consultative Meeting is advised on environmental and conservation issues in Antarctica by the Committee for Environmental Protection. A major concern within this committee is the risk to Antarctica from unintentional introduction of non-native species from outside the region.
Document 13: Vivaldi Glacier: Vivaldi Glacier () is a glacier lying between the Colbert Mountains and the Lully Foothills, flowing south from Purcell Snowfield into the head of Schubert Inlet on the west coast of Alexander Island, Antarctica. The feature appears to be first shown on maps of the United States Antarctic Service (USAS) which photographed Alexander Island from the air in 1940. It was mapped from air photos obtained by the Ronne Antarctic Research Expedition in 1947–48, by Searle of the Falkland Islands Dependencies Survey in 1960. Named "Vivaldi Gap" by the United Kingdom Antarctic Place-Names Committee in 1961, after Antonio Vivaldi (1678–1741), Venetian composer. The name was amended to Vivaldi Glacier following review of Landsat program imagery, 1979, displaying flow lines in the feature.
Document 14: Wilkes Land: Wilkes Land is a large district of land in eastern Antarctica, formally claimed by Australia as part of the Australian Antarctic Territory, though the validity of this claim has been placed for the period of the operation of the Antarctic Treaty, to which Australia is a signatory. It fronts on the southern Indian Ocean between Queen Mary Coast and Adelie Land, extending from Cape Hordern in 100°31' E to Pourquoi Pas Point, in 136°11' E. The region extends as a sector about 2600 km towards the South Pole, with an estimated land area of 2,600,000 km², mostly glaciated. It is further subdivided in the following coastal areas which can also be thought of as sectors extending to the South Pole:
Document 15: Black Glacier: Black Glacier () is a broad tributary to the Lillie Glacier flowing northeast, marking the southeast extent of the Bowers Mountains, a major mountain range situated in the geographical location of Victoria Land, Antarctica. The glacier was first mapped by the United States Geological Survey from ground surveys and from U.S. Navy air photos, 1960–62, and named by the Advisory Committee on Antarctic Names for Robert F. Black, former geologist of the University of Wisconsin, project leader for Antarctic patterned ground studies, who carried out research in the McMurdo Sound region during several summer seasons in the 1960s. The glacier lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.
ground_truth: south of 60° S
sub_queries: In what continent is Holoviak Glacier in? Answer: Antarctica
What latitude is defined as being Antarctica 's border? Answer: south of 60° S