Question: When did Alanders rejoin the country where the Embassy of France is found in the place of birth of Leif Westerberg?

full_context: Document 1: Leif Westerberg: Westerberg was born in Stockholm and turned professional in 1997. He has played predominantly on Europe's second tier Challenge Tour where he has won two tournaments. He has graduated from the Challenge Tour twice, in 2004 and 2007, when he finished 7th and 5th respectively on the end of season rankings. Both in 2005 and 2008 he failed to win enough money to retain his card on the top level European Tour, although he came through qualifying school in 2005 to regain his playing status for the 2006 season, when he finished a career high of 131st on the Order of Merit.
Document 2: 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.
Document 3: Embassy of France, Stockholm: The Embassy of France in Stockholm is the diplomatic mission of the French Republic in Sweden. The chancery is located at Kommendörsgatan 13.
Document 4: Embassy of Sweden, Prague: The Swedish Embassy to the Czech Republic is located on Úvoz street, in Hradčany, the castle region of Prague. It is close to the Strahov Monastery. The embassy has a great view of the rest of Prague because it is located up on the hill. A pedestrian path, named after Swedish diplomat Raoul Wallenberg, who saved thousands of Jews from the Holocaust, leads from embassy up to the Petrin Hill.
Document 5: Andrey Lukin: Since then his career failed to live up to the earlier promise, but he still became an International Master and won five Leningrad (Saint Petersburg) championships, which at the time were equal in strength to a national championship of an average European country, with many titled players taking part. He combined his chess playing with a nine to five job as an engineer.
Document 6: 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 7: Yeh Wei-tze: Yeh was born in Taipei. He turned professional in 1994 and played on the Asian Tour during his early career. In 2000 he won the European Tour co-sanctioned Benson and Hedges Malaysian Open to earn a two-year exemption on that tour. The win also helped him to second place on the Davidoff Asian PGA Order of Merit that season.
Document 8: Massimo Scarpa: Scarpa was born in Venice and turned professional at the end of 1992 having won the European Amateur. He played on the European Tour and the second tier Challenge Tour between 1993 and 2006. He won once on the European Tour and twice on the Challenge Tour. He also won the Italian National Omnium three times in four years between 1998 and 2001. He played on the Italian team in the 1999 Alfred Dunhill Cup at St Andrews, beating three-time major champion Payne Stewart in the second round less than a month before Stewart's death.
Document 9: Embassy of Sweden, Rome: The Embassy of Sweden in Rome is Sweden's diplomatic mission in Italy. The current building was built between 1965-1966 and completed in 1967.
Document 10: Embassy of France, Prague: The Embassy of France to the Czech Republic is located on Velkopřevorské náměstí, in Malá Strana, Prague, next to Vltava's island Kampa. It occupies the large baroque Buquoy Palace (1719). The ground floor of the Embassy was flooded during the August 2002 floods.
Document 11: 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 12: 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 13: Rafael Echenique: Echenique was born in San Luis, Argentina. He turned pro in 1999. Having failed to gain a place on the European Tour via the qualifying school on four occasions, Echenique finally won his card on the main tour by virtue of finishing seventh on the 2006 Challenge Tour, helped by a win in the Telia Challenge Waxholm in Sweden and was second in the Apulia San Domenico Grand Final. Later that year he won the biggest title of his career, the Argentine Open in his home country.
Document 14: Embassy of France, London: The Embassy of France in London is the diplomatic mission of France to the United Kingdom. Located just off Knightsbridge at Albert Gate, one of the entrances to Hyde Park, it is situated immediately opposite the Embassy of Kuwait.
Document 15: 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.
ground_truth: December 1917
sub_queries: Leif Westerberg >> place of birth Answer: Stockholm
Embassy of France, Stockholm >> country Answer: Sweden
When did Alanders rejoin Sweden ? Answer: December 1917