Question: Annenkov Island was discovered by a British explorer who made how many voyages to the Pacific Ocean?

full_context: Document 1: Cape Ellsworth: Cape Ellsworth ( ) is a sheer rock bluff 290 m high forming the north end of Young Island in the Balleny Islands. It was named by personnel of the "Discovery II" in 1936 for American explorer Lincoln Ellsworth. The vessel, after picking up Ellsworth at Little America on the Ross Ice Shelf, made a running survey around the northern end of the Balleny Islands on the way back to Australia.
Document 2: Anvers Island: Anvers Island or Antwerp Island or Antwerpen Island or Isla Amberes is a high, mountainous island 61 km long, the largest in the Palmer Archipelago of Antarctica. It was discovered by John Biscoe in 1832 and named in 1898 by the Belgian Antarctic Expedition under Adrien de Gerlache after the province of Antwerp in Belgium. It lies south-west of Brabant Island at the south-western end of the group. The south-western coastline of the island forms part of the Southwest Anvers Island and Palmer Basin Antarctic Specially Managed Area (ASMA 7). Cormorant Island, an Important Bird Area, lies 1 km off the south coast.
Document 3: George Vancouver: Captain George Vancouver (22 June 1757 – 10 May 1798) was a British officer of the Royal Navy, best known for his 1791–95 expedition, which explored and charted North America's northwestern Pacific Coast regions, including the coasts of contemporary Alaska, British Columbia, Washington, and Oregon. He also explored the Hawaiian Islands and the southwest coast of Australia.
Document 4: Rustad Bay: Rustad Bay ( ) is a small bay indenting the southwest side of Annenkov Island, off the south coast of South Georgia. Surveyed by the SGS in the period 1951-57, and named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for Ditlef Rustad, biologist of the Norwegian expedition under Horntvedt, 1927–28, during which he visited and made collections on Annenkov Island.
Document 5: Hawaii Sesquicentennial half dollar: The Hawaii Sesquicentennial half dollar was struck in 1928 by the United States Bureau of the Mint in honor of the 150th anniversary of Captain James Cook's landing in Hawaii, the first European to reach there. The coin depicts Captain Cook on the obverse and a Hawaiian chieftain on the reverse. Only 10,000 were struck for the public, making it rare and valuable.
Document 6: Captain James Cook (miniseries): Captain James Cook is a 1986 Australian mini series about the life of Captain James Cook.
Document 7: Sappho Point: Sappho Point ( ) is a headland which marks the west side of the entrance to Cumberland East Bay, on the north coast of South Georgia. Probably first sighted by the British expedition under Cook which explored the north coast of South Georgia in 1775. Named for HMS Sappho, British ship used in charting portions of Cumberland Bay in 1906.
Document 8: Mislaid Rock: Mislaid Rock ( ) is a rock lying southwest of First Point, Annenkov Island, off the south coast of South Georgia. The name appears to be first used on a 1931 British Admiralty chart.
Document 9: Cape Farewell, New Zealand: Cape Farewell is a headland in New Zealand, the most northerly point on the South Island. It is located just west of Farewell Spit. First mapped by Abel Tasman, it was named by British explorer Captain James Cook in 1770 —it was the last land seen by his crew as they departed on the ship's homeward voyage.
Document 10: 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 11: List of ships of James Cook: Captain James Cook, FRS, RN (7 November 1728[NB 1] – 14 February 1779) was a British explorer, navigator, cartographer, and captain in the Royal Navy. Cook made detailed maps of Newfoundland prior to making three voyages to the Pacific Ocean, during which he achieved the first recorded European discovey of eastern Australia, Hawaii and undertook the first circumnavigation of New Zealand.
Document 12: South West Point: South West Point ( ) is the southwest point of Annenkov Island, off the south-central coast of South Georgia. Annenkov Island was discovered by Captain James Cook in 1775, and resighted by Admiral Thaddeus Bellingshausen in 1819. The point appears to be first named on a chart based upon DI surveys undertaken in the period 1926-30.
Document 13: History of New Zealand: The history of New Zealand dates back at least 700 years to when it was discovered and settled by Polynesians, who developed a distinct Māori culture centred on kinship links and land. The first European explorer to sight New Zealand was Dutch navigator Abel Tasman on 13 December 1642. The Dutch were also the first non-natives to explore and chart New Zealand's coastline. Captain James Cook, who reached New Zealand in October 1769 on the first of his three voyages, was the first European explorer to circumnavigate and map New Zealand. From the late 18th century, the country was regularly visited by explorers and other sailors, missionaries, traders and adventurers. In 1840 the Treaty of Waitangi was signed between the British Crown and various Māori chiefs, bringing New Zealand into the British Empire and giving Māori the same rights as British subjects. There was extensive British settlement throughout the rest of the century and into the early part of the next century. War and the imposition of a European economic and legal system led to most of New Zealand's land passing from Māori to Pākehā (European) ownership, and most Māori subsequently became impoverished.
Document 14: Major explorations after the Age of Discovery: Major explorations of Earth continued after the Age of Discovery. By the early seventeenth century, vessels were sufficiently well built and their navigators competent enough to travel to virtually anywhere on the planet by sea. In the 17th century Dutch explorers such as Willem Jansz and Abel Tasman explored the coasts of Australia. Spanish expeditions from Peru explored the South Pacific and discovered archipelagos such as Vanuatu and the Pitcairn Islands. Luis Vaez de Torres chartered the coasts of New Guinea and the Solomon Islands, and discovered the strait that bears his name. European naval exploration mapped the western and northern coasts of Australia, but the east coast had to wait for over a century. Eighteenth century British explorer James Cook mapped much of Polynesia and traveled as far as Alaska. In the later 18th century the Pacific became a focus of renewed interest, with Spanish expeditions, followed by Northern European ones, reaching the coasts of northern British Columbia and Alaska.
Document 15: James Cook: Captain James Cook (7 November 172814 February 1779) was a British explorer, navigator, cartographer, and captain in the Royal Navy. Cook made detailed maps of Newfoundland prior to making three voyages to the Pacific Ocean, during which he achieved the first recorded European contact with the eastern coastline of Australia and the Hawaiian Islands, and the first recorded circumnavigation of New Zealand.
ground_truth: three