Question: The 2012 Spengler Cup was held in Davos, Switzerland between 26 and 31 December 2012, all matches were played at HC Davos's home known as Vaillant Arena, an arena in Davos, in which country?

full_context: Document 1: 2011–12 Swiss Cup: The 2011–12 Swiss Cup is the 87th season of Switzerland's annual football cup competition. It will begin on 16 September 2011 with the first games of Round 1 and will end on 16 May 2012 with the Final in the Stade de Suisse in Berne. The winners of the competition will qualify for the play-off round of the 2012–13 UEFA Europa League. The current title holders are FC Sion.
Document 2: 2009 Spengler Cup: The 2009 Spengler Cup was held, as it always was, in Davos, Switzerland between 26 and 31 December, 2009. All matches were played at host HC Davos's home Vaillant Arena. The tournament featured all of the last year's tournament participants except for last year's winners Dynamo Moscow who was replaced by Dinamo Minsk and ERC Ingolstadt who was replaced by Adler Mannheim.
Document 3: Vaillant Arena: Vaillant Arena (Eisstadion Davos) is an arena in Davos, Switzerland. It is primarily used for ice hockey and is the home arena of HC Davos. It holds 7,080 people, of which 3,280 are seated. Every year the Spengler Cup is played in this arena.
Document 4: Genève-Servette HC: The Genève-Servette HC (also called "Servette" or "GSHC") is a professional ice hockey club based in Geneva, Switzerland and competing in the National League, the top tier of the Swiss hockey league system. The team plays their home games at the Patinoire des Vernets, which has a seating capacity of 7,135. During the 2015-16 regular season, the GSHC was the fourth most attended team in Switzerland, averaging 6,556 spectators.
Document 5: 2013 Spengler Cup: The 2013 Spengler Cup was held in Davos, Switzerland between 26 and 31 December 2013. All matches were played at HC Davos's home known as Vaillant Arena. Six competing teams were split into two groups of three. The two groups, named Torriani and Cattini, were named after legendary Swiss hockey players Richard 'Bibi' Torriani and the Cattini brothers, Hans and Ferdinand.
Document 6: 2011 Spengler Cup: The 2011 Spengler Cup was held in Davos, Switzerland between 26 and 31 December 2011. All matches were played at host HC Davos's home Vaillant Arena. The number of teams was expanded in 2010 from 5 to 6 in comparison to previous seasons, and split into two groups of three. The two groups, named Torriani and Cattini, were named after legendary Swiss hockey players Bibi Torriani and Hans Cattini. HC Davos won the event for a record 15th time.
Document 7: HC Davos: Hockey Club Davos is a professional Swiss ice hockey club based in Davos, Switzerland. Davos plays in the National League (NL). The team is usually a strong force in the league and often bolster their roster with Swiss national team players and players who once played for National Hockey League teams. HC Davos also has hosted the annual Spengler Cup tournament, an invitational competition, since 1923.
Document 8: 2012 Spengler Cup: The 2012 Spengler Cup was held in Davos, Switzerland between 26 and 31 December 2012. All matches were played at HC Davos's home known as Vaillant Arena. Six competing teams were split into two groups of three. The two groups, named Torriani and Cattini, were named after legendary Swiss hockey players Richard 'Bibi' Torriani and the Cattini brothers, Hans and Ferdinand.
Document 9: 2015 Spengler Cup: The 89th Spengler Cup was an ice hockey competition held in Davos, Switzerland between 26 and 31 December 2015. All matches were played at HC Davos's home known as Vaillant Arena. Six competing teams were split into two groups of three (in the round-robin series). The two groups, named Torriani and Cattini, are named after legendary Swiss hockey players Richard 'Bibi' Torriani and the Cattini brothers, Hans and Ferdinand.
Document 10: 2014 Spengler Cup: The 88th Spengler Cup was an ice hockey competition held in Davos, Switzerland between 26 and 31 December 2014. All matches were played at HC Davos's home known as Vaillant Arena. Six competing teams were split into two groups of three (in the round-robin series). The two groups, named Torriani and Cattini, were named after legendary Swiss hockey players Richard 'Bibi' Torriani and the Cattini brothers, Hans and Ferdinand.
Document 11: 2010 Spengler Cup: The 2010 Spengler Cup was held in Davos, Switzerland, between 26 and 31 December 2010. All matches were played at host HC Davos's home Vaillant Arena. The number of teams was expanded from five to six in comparison to previous seasons, and split into two groups of three. The two groups, named Torriani and Cattini, were named after legendary Swiss hockey players Bibi Torriani and Hans Cattini.
Document 12: 2016 Spengler Cup: The 90th Spengler Cup was an ice hockey competition being held in Davos, Switzerland between 26 and 31 December 2016. All matches were played at HC Davos's home known as Vaillant Arena. Six competing teams were split into two groups of three (in the round-robin series). The two groups, named Torriani and Cattini, are named after legendary Swiss hockey players Richard 'Bibi' Torriani and the Cattini brothers, Hans and Ferdinand.
Document 13: Spengler Cup: The Spengler Cup is an annual invitational ice hockey tournament held in Davos, Switzerland. First held in 1923, the Spengler Cup is often cited as the oldest invitational ice hockey tournament in the world. The event is hosted by the Swiss team HC Davos and played each year in Davos, Switzerland, between Christmas (December 25) and New Year's Day. Currently, all games are held at Vaillant Arena.
Document 14: St. Galler Kantonalbank Arena: St. Galler Kantonalbank Arena, formerly the Diners Club Arena, and originally known as Eishalle Lido, is an indoor sporting arena located in Rapperswil, Switzerland. The capacity of the arena is 6,100 and was built in 1987. It is the home arena of the Rapperswil-Jona Lakers ice hockey team. The arena was completely re-done in 2005, and changed its name following corporate sponsorship from Diners Club International. Its name was changed again in 2016 after a new sponsorship deal with naming rights was agreed with St. Galler Kantonalbank.
Document 15: 2003 Spengler Cup: The 2003 Spengler Cup was held in Davos, Switzerland between December 26, 2003 and December 31, 2003. All matches were played at host HC Davos's home Eisstadion Davos. The final was won 7-4 by Team Canada over host HC Davos.
ground_truth: Switzerland