Question: When did Alanders rejoin the country for Mimikry?

full_context: Document 1: List of archipelagos by number of islands: Location (total number of islands) Name of the archipelagos Number of islands, islets, reefs, coral reefs and cays Norway Norwegian Archipelago 240,000 Finland Archipelago Sea 40,000 (approx.) Canada Canadian Arctic Archipelago 36,563 Canada Thirty Thousand Islands 30,000 (approx.) Stockholm archipelago, Sweden (34,316) Stockholm archipelago 28,945 Södermanland archipelago, Sweden Södermanland archipelago 5,371 Indonesia Indonesian Archipelago 17,508 -- 18,306 Philippines Philippine Archipelago 7,641 Swedish East Coast Archipelago (21,628) Småland archipelago 12,740 Östergötland archipelago 8,888 Sweden Öregrund archipelago 9,722 The Bahamas 3,200 Bahama Archipelago 3,200 Japanese archipelago 6,852 Seto Inland Sea 3,000 Finland Kvarken Archipelago 6,500 British Isles British Isles 6,289 China (5,000) Zhoushan Archipelago 1,390 (islands) Korea Korean Peninsula 3,579 Queensland, Australia Great Barrier Reef 2,900 (reefs), 900 (islands) Chile Chile 2,324 Quảng Ninh Province, Vietnam Ha Long Bay 1,960 -- 2,000 Saint Lawrence River, Canada -- United States border Thousand Islands 1,864 Thailand Thailand 1,430 India Andaman and Nicobar Islands, Lakshadweep Islands, Coastal India 1208 Greece Aegean Sea 1,200 -- 6,000 Croatia Dalmatia 1,200 Maldives Maldive Islands 1,192 (coral islands) Estonia West Estonian archipelago 900 Italy Italy 800 Falkland Islands Falkland Islands 776 New Zealand New Zealand Archipelago 600 Turkey Aegean Sea, Marmara Sea, Black Sea 500 (approx.)
Document 2: Bogskär: Bogskär is a small group of Baltic Sea islets off the southernmost tip of Finland. It is Finland's southernmost land and governed by the municipality of Kökar in Åland. The islets are remote: the distance to the nearest large islands in Kökar, Föglö and Lemland is over .
Document 3: Hep Stars: The Hep Stars were a Swedish rock group, formed in 1963 in Stockholm. During 1965-66 the band was the most successful of contemporary 1960s Swedish pop groups performing in the English language. Outside The Nordic Countries the band is best known as a launching point for the keyboard player and composer Benny Andersson, who went on to enjoy worldwide success with ABBA.
Document 4: Estonia: Estonia (i/ɛˈstoʊniə/; Estonian: Eesti [ˈeːsti]), officially the Republic of Estonia (Estonian: Eesti Vabariik), is a country in the Baltic region of Northern Europe. It is bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia (343 km), and to the east by Lake Peipus and Russia (338.6 km). Across the Baltic Sea lies Sweden in the west and Finland in the north. The territory of Estonia consists of a mainland and 2,222 islands and islets in the Baltic Sea, covering 45,339 km2 (17,505 sq mi) of land, and is influenced by a humid continental climate.
Document 5: Finnish Navy: When the Winter War broke out the Finnish Navy moved to occupy the de-militarized Åland Islands and to protect merchant shipping. In the first month of the war, battles between Soviet ships and Finnish coastal batteries were fought at Hanko, Finland, Utö and Koivisto. At Koivisto and Hanko, the batteries forced Soviet battleships to retire with damage. Finnish efforts to use submarines ("Vesikko" and "Saukko") to sink Soviet capital ships failed. In December 1939 the ice became so thick that only the ice-breakers could still move. The two coastal defence ships were moved to the harbour in Turku where they were used to strengthen the air-defences of the city. They remained there for the rest of the war.
Document 6: Mikael Strandberg: Mikael Strandberg was born in 1962 in Dala-Järna, Sweden. He started his professional career as an explorer 28 years ago. He is currently working as a lecturer, film maker and a writer. He has produced four documentaries "Patagonia - 3,000 Kilometres by Horse","The Masaai People - 1,000 Kilometres by Foot" , "-58 Degrees – Exploring Siberia on Skies." and "Expedition Yemen - 126 degrees In The Shade."
Document 7: Aleutian Islands: The Aleutian Islands (Aleut: Tanam Unangaa, literally ``Land of the Aleuts ''; pronounced (/ əˈluːʃən /; possibly from Chukchi aliat,`` island'') are a chain of 14 large volcanic islands and 55 smaller ones belonging to both the U.S. state of Alaska and the Russian federal subject of Kamchatka Krai. They form part of the Aleutian Arc in the Northern Pacific Ocean, occupying an area of 6,821 sq mi (17,666 km) and extending about 1,200 mi (1,900 km) westward from the Alaska Peninsula toward the Kamchatka Peninsula in Russia, and mark a dividing line between the Bering Sea to the north and the Pacific Ocean to the south. Crossing longitude 180 °, at which point east and west longitude end, the archipelago contains both the westernmost part of the United States by longitude (Amatignak Island) and the easternmost by longitude (Semisopochnoi Island). The westernmost U.S. island in real terms, however, is Attu Island, west of which runs the International Date Line. While nearly all the archipelago is part of Alaska and is usually considered as being in the ``Alaskan Bush '', at the extreme western end, the small, geologically related Commander Islands belong to Russia.
Document 8: Mimikry: Mimikry is a Swedish punk rock band established by singer Hjalmar "Hjalle" Östman and drummer Jonas "Heavy" Stentäpp both coming from the Gagnef region west of Sweden. Besides Mimikry with its 8 albums to date, Hjalle and Heavy had an important duo project and had three further albums in their name Hjalle och Heavy, after huge popularity through the television series "På rymmen". Heavy was also involved in famous metal band Dökött.
Document 9: Immanu El: Immanu El started as a musical experiment in 2004 by 16-year-old Claes Strängberg, who was soon joined by his twin brother Per and friends David Lillberg, Jonatan Josefsson. After a few concerts in Sweden, supporting such bands as Logh and Loney, Dear, Immanu El was booked to perform at Rookiefestivalen in Hultsfred, a festival hosted by Hultsfredsfestivalen (Rockparty) - the biggest Swedish music festival at the time and an opportunity for unsigned bands to perform at a major event. The band released their first demo EP titled "Killerwhale" in 2005, before they signed with Swedish independent record label And the Sound Records and Japanese label Thomason Sounds (Inpartmaint) in 2006.
Document 10: Mikael Stanne: Bengt Mikael Stanne (born 20 May 1974) is the vocalist & one of the lyricists (also previously rhythm guitarist) for the Swedish melodic death metal band, Dark Tranquillity and the ex-vocalist for Swedish power metal band HammerFall.
Document 11: Vilsandi: The island of Vilsandi, Saaremaa Parish, Saare County, Estonia is located in the Baltic Sea. It covers an area of some 9 square km and is the westernmost populated island in Estonia. The surrounding waters are shallow and rocky and many ships travelling the Baltic have perished nearby. The island of Vilsandi can be reached by boat, by truck having suitable clearance or on foot by wading from Saaremaa. Much of the island is now part of Vilsandi National Park, which grew from a bird reserve founded in 1910. It is a highly sensitive ecosystem due to the use of the area by many migratory birds as a breeding and nesting ground. Hunting is absolutely prohibited. This park is a popular tourist destination not only for local Estonians, but also people of Finland who are visiting Estonia in greater and greater numbers.
Document 12: Marionette (band): Marionette was a Swedish melodic death metal band. They hail from Gothenburg, Sweden, formed in 2005. The band achieved recognition from placing high, and often winning, many national and international music contests. Inspired by the Japanese visual-kei scene and the brutality of Swedish hardcore and metal, Marionette has brought new light to the metal genre. When founded in 2005, when the average member's age was 16, Marionette quickly made a name for themselves in the Swedish metal scene by winning and placing high in many national and international music contests. In support of the EP, "Terror Hearts" -which was mixed and mastered by Fredrick Nordström (In Flames, At the Gates) – Marionette shared the stage with some of the world's most renowned metal acts including: Machine Head, Slayer, Mastodon, Meshuggah, and Candlemass among others.
Document 13: Miike Snow: Miike Snow was formed in 2007 in Stockholm, Sweden. Band members Christian Karlsson and Pontus Winnberg were childhood friends who spent time playing in bands and working on various projects in studios throughout the city of Gothenburg. Karlsson was a former member of the Swedish hip-hop band Goldmine, who toured with The Fugees. After separate moves to Stockholm, they reunited in 2000.
Document 14: Baltic Sea: Since May 2004, with the accession of the Baltic states and Poland, the Baltic Sea has been almost entirely surrounded by countries of the European Union (EU). The only remaining non-EU shore areas are Russian: the Saint Petersburg area and the exclave of the Kaliningrad Oblast.
Document 15: League of Nations: Åland is a collection of around 6,500 islands in the Baltic Sea, midway between Sweden and Finland. The islands are almost exclusively Swedish-speaking, but in 1809, the Åland Islands, along with Finland, were taken by Imperial Russia. In December 1917, during the turmoil of the Russian October Revolution, Finland declared its independence, but most of the Ålanders wished to rejoin Sweden. The Finnish government considered the islands to be a part of their new nation, as the Russians had included Åland in the Grand Duchy of Finland, formed in 1809. By 1920, the dispute had escalated to the point that there was danger of war. The British government referred the problem to the League's Council, but Finland would not let the League intervene, as they considered it an internal matter. The League created a small panel to decide if it should investigate the matter and, with an affirmative response, a neutral commission was created. In June 1921, the League announced its decision: the islands were to remain a part of Finland, but with guaranteed protection of the islanders, including demilitarisation. With Sweden's reluctant agreement, this became the first European international agreement concluded directly through the League.
ground_truth: December 1917
sub_queries: Which was the country for Mimikry? Answer: Sweden
When did Alanders rejoin Sweden ? Answer: December 1917