Question: The Nightingale Islands are a group of three islands, part of the Tristan da Cunha territory, Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in which location?

full_context: Document 1: 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 2: Saint Helena, Ascension and Tristan da Cunha: Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic and consisting of the island of Saint Helena, Ascension Island and the archipelago of Tristan da Cunha.
Document 3: Three Kings Islands: The Three Kings Islands, called Manawatawhi by Māori, are a group of 13 uninhabited islands about 55 km northwest of Cape Reinga,of New Zealand, where the South Pacific Ocean and Tasman Sea converge. They measure about 4.86 km² in area. The islands are situated on a submarine plateau, the Three Kings Bank, and are separated from the New Zealand mainland by an 8 km wide, 200 to 300 m deep submarine trough. Therefore, despite relative proximity to the mainland, the islands are listed with the New Zealand Outlying Islands. The islands are an immediate part of New Zealand, but not part of any region or district, but instead "Area Outside Territorial Authority", like all the other outlying islands except the Solander Islands.
Document 4: Stoltenhoff Island: Stoltenhoff Island is a small uninhabited island in the South Atlantic Ocean, part of the Nightingale Islands. It is the smallest of the Nightingale Islands, and is to the north west of Nightingale Island itself. They are governed as part of Tristan da Cunha, an archipelago and part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha. The island is part of the Nightingale Islands group Important Bird Area (IBA), identified as such by BirdLife International as a breeding site for seabirds and endemic landbirds.
Document 5: St Helena Cricket Association: St Helena Cricket Association is the official governing body of the sport of cricket in St Helena. Its current headquarters is located in Jamestown, St Helena. St Helena Cricket Association is St Helena's representative at the International Cricket Council and is an affiliate member and has been a member of that body since 2001. It is also a member of the African Cricket Association.
Document 6: Nightingale Islands: The Nightingale Islands are a group of three islands in the South Atlantic Ocean, part of the Tristan da Cunha territory. They consist of Nightingale Island, Middle Island and Stoltenhoff Island. The islands are administered by the United Kingdom as part of the overseas territory of Saint Helena, Ascension and Tristan da Cunha. The Nightingale Islands are uninhabited.
Document 7: Military of the Falkland Islands: The Falkland Islands are a British overseas territory and, as such, rely on the UK for the guarantee of their security. The other UK territories in the South Atlantic, South Georgia and the South Sandwich Islands, fall under the protection of the British forces on the Falklands (also known as British Forces Falkland Islands or British Forces South Atlantic Islands), which includes commitments from the British Army, Royal Air Force and Royal Navy. They are headed by the Commander of the British Forces South Atlantic Islands (CBFSAI).
Document 8: Administrator of Tristan da Cunha: The Administrator of Tristan da Cunha is the head of government and representative of the Governor of Saint Helena in Tristan da Cunha. The role of the Administrator is to chair the territory's Island council which consists of 8 elected members and 3 appointed members. As a part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha, the head of state is Elizabeth II, with the Governor of Saint Helena appointed by the British government to act as her local representative. However, as Tristan da Cunha is over 1,350 miles away from Saint Helena, an Administrator is appointed as the Governor's representative on the Island. Previously the Administrator also acted as the local Magistrate, but the appointment is to be transferred to a non-member of the executive or legislative branches of government.
Document 9: Middle Island, Tristan da Cunha: Middle Island is a small, uninhabited island in the South Atlantic Ocean, part of the Nightingale Islands. They are governed as part of Tristan da Cunha, an archipelago that is part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha. The island is part of the Nightingale Islands group Important Bird Area (IBA), identified as such by BirdLife International as a breeding site for seabirds and endemic landbirds. It is also known as Alex Island.
Document 10: 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 11: History of Tristan da Cunha: Tristan da Cunha is part of the British overseas territory of Saint Helena, Ascension and Tristan da Cunha and has a history going back to the beginning of the 16th century. It was settled by men from military garrisons and ships, who married native women from Saint Helena and the Cape Colony. Its people are multi-racial, descended from European male founders and mixed-race (African, Asian and European) and African women founders.
Document 12: Diego Garcia: Diego Garcia is an atoll just south of the equator in the central Indian Ocean, and the largest of 60 small islands comprising the Chagos Archipelago. It was settled by the French in the 1790s and was transferred to British rule after the Napoleonic Wars. It was one of the "Dependencies" of the British Colony of Mauritius until it was detached for inclusion in the newly created British Indian Ocean Territory (BIOT) in 1965. Between 1968 and 1973, the population was forcibly removed by the United Kingdom and the United States (in order to establish an American base) through intimidation of locals and denying the return of any who left the island. Many were deported to Mauritius and Seychelles, following which the United States built a large naval and military base on Diego Garcia, which has been in continuous operation ever since. s of 2015 , Diego Garcia is the only inhabited island of the BIOT; the population is composed of military personnel and supporting contractors.
Document 13: Saint Helena Police Service: The Saint Helena Police Service is the local police force for the British overseas territory of Saint Helena, Ascension and Tristan da Cunha, consisting of the islands of Saint Helena, Ascension and the island group of Tristan da Cunha.
Document 14: Grytviken: Grytviken is a settlement on the island of South Georgia, part of a British Overseas Territory in the South Atlantic. The settlement's name is Swedish in origin, meaning "the Pot Bay". The name was coined in 1902 by the Swedish Antarctic Expedition and documented by the Swedish surveyor Johan Gunnar Andersson, after the expedition found old English try pots used to render seal oil at the site. It is the best harbour on the island, consisting of a bay (King Edward Cove) within a bay (Cumberland East Bay). The site is quite sheltered, provides a substantial area of flat land suitable for building, and has a good supply of fresh water.
Document 15: Geography of Tristan da Cunha: Tristan da Cunha is an archipelago of five islands in the southern Atlantic Ocean, the largest of which is the island of Tristan da Cunha itself and the second-largest the remote bird haven Gough Island. It forms part of a wider territory called Saint Helena, Ascension and Tristan da Cunha which includes Saint Helena and Ascension Island.
ground_truth: South Atlantic Ocean