Question: Gaetano Giallanza represented a football who played for the Swiss Olympic team in what year?

full_context: Document 1: 2008–09 Genoa C.F.C. season: Genoa C.F.C. enjoyed its best season in recent history and finished fifth in Serie A. Topscorer Diego Milito hit the back of the net 24 times, and earned a move to Inter prior to the 2009-10 season. The ex-player and 29-year-old Argentinian Milito, arrived from relegated Spanish side Real Zaragoza, and the returnee performed his best season yet. Thanks to his goals and Thiago Motta's midfield display, Genoa finished in the top 5, and nearly pipped Fiorentina to the final Champions League spot. Motta was also sold to Inter in the summer, which left a huge fold in the Genoa squad.
Document 2: Tranquillo Barnetta: Tranquillo Barnetta (] ; born 22 May 1985) is a Swiss professional footballer who plays as a midfielder for St. Gallen. He usually plays out wide as a left winger but can also play in the centre as an attacking midfielder, or even in a more withdrawn role as a central midfielder. Barnetta is known for his "extreme pace, mobility and creativity". Prior to moving to the MLS, Barnetta played football for several Swiss and German clubs. At international level, he has amassed 75 caps for the Swiss national team, representing his nation in three FIFA World Cups, and two UEFA European Football Championships.
Document 3: Nathaniel Clyne: Nathaniel Edwin Clyne (born 5 April 1991) is an English professional footballer who plays as a right back for Premier League club Liverpool and the England national team.
Document 4: Gennaro Gattuso: Gennaro Ivan "Rino" Gattuso, (] ; born 9 January 1978) is an Italian football manager in charge of A.C. Milan Primavera and a former footballer.
Document 5: Gaetano Giallanza: Gaetano Giallanza (born 6 June 1974 in Dornach, Switzerland) is a Swiss-Italian professional footballer, who last played for FC Basel as a striker. He has previously played for Darlington, Norwich City and Bolton Wanderers. He is now a football agent and represented Timm Klose during his transfer to Giallanza's old club Norwich City.
Document 6: David Alaba: David Olatukunbo Alaba (born 24 June 1992) is an Austrian professional footballer who plays for German club Bayern Munich and the Austria national team. He holds Austria's record as the youngest player to play for their senior national team, debuting for them in 2009 as a 17-year-old.
Document 7: Gianluca Vialli: Gianluca Vialli (born 9 July 1964) is an Italian football manager and former footballer who played as a striker. Since retiring, he has gone into management and punditry and is a commentator for Sky Sport Italia.
Document 8: N'Golo Kanté: N'Golo Kanté (] ; born 29 March 1991) is a French professional footballer who plays as a defensive midfielder for English club Chelsea and the France national team.
Document 9: 2012–13 FC Sion season: In the 2012–13 season, Sion competes in the Swiss Super League and the Swiss Cup. In the summer transfer window, they brought in Italian World Cup winner Gennaro Gattuso, as well as Kyle Lafferty (former of Rangers). In addition, they bought an until then unknown Brazilian footballer called Léo Itaperuna from the 5th division Club of Arapongas and another forward Mathieu Manset from Reading.
Document 10: 2009–10 Genoa C.F.C. season: Genoa C.F.C. had a mixed season, in which it struggled to replace world-class striker Diego Milito, who moved on to Internazionale, where he was key in it winning the treble in 2010. Such a player was difficult to find on the market, and his Argentinian replacements Hernán Crespo and Rodrigo Palacio lacked the final punch. Crespo had it in his younger years, of course, but despite four goals in the autumn, he was offloaded to Parma, as Genoa put its faith in David Suazo for the goalscoring. Sergio Floccari also departed, and the Lazio signing scored more goals for the Roman club in half the year than what any player did for Genoa the whole season, while Suazo became a flop. The defence did not perform at expected level either, and even though the team scored several goals by many players, the defensive holes ensured the team did not repeat the fifth position from the year before.
Document 11: Timm Klose: Timm Klose (born 9 May 1988) is a Swiss footballer who plays as a centre back for the English club Norwich City and the Switzerland national team. Born in Frankfurt to a German father and Swiss mother, he was raised in Switzerland from the age of five. After playing in the youth teams of BSC Old Boys and FC Basel, he moved to FC Thun in 2009, and two years later joined the German club 1. FC Nürnberg. He played for VfL Wolfsburg from 2013 until he joined Norwich in 2016. Klose made his full international debut for Switzerland in 2011, and as of January 2016 has 12 caps. He also played for the Switzerland Olympic team at London 2012.
Document 12: 1994–95 A.S. Roma season: Associazione Sportiva Roma was rejuvenated in Carlo Mazzone's second season as coach, much due to Abel Balbo being the goalscorer it had lacked for the previous years. The summer signings of 1994 helped, with internationally recognized players Jonas Thern and Daniel Fonseca joining the club from rivals Napoli. Also Francesco Moriero became a household player since he proved his worth in the club, recently coming from Cagliari.
Document 13: Adonis Ajeti: Adonis Afrim Ajeti (born 26 February 1997) is a Swiss professional footballer of Albanian descent who plays as a defender for Swiss club FC St. Gallen. He is the twin brother of Albian Ajeti who plays for German club Augsburg and the younger brother of Arlind Ajeti who plays for Italian Serie A club Torino. Adonis hold dual citizenship, the Swiss where he was born and grown up and the Albanian citizenship due to his parents origin.
Document 14: Sokratis Papastathopoulos: Sokratis Papastathopoulos (Greek: Σωκράτης Παπασταθόπουλος , ] ; born 9 June 1988) is a Greek footballer who plays as a starting centre back for German Bundesliga club Borussia Dortmund and the Greek national team. Since the surname Papastathopoulos is too long to print on the back of most shirts, the name Sokratis is usually displayed and is the singular name that he is best known by in the football world.
Document 15: Jérôme Boateng: Jérôme Agyenim Boateng (] ; born 3 September 1988) is a German professional footballer who plays as a defender for German club Bayern Munich and the Germany national team. A versatile defender, Boateng primarily is a centre-back, although he can also play as a right-back. Physically strong and composed in possession, he has garnered a reputation as a tough-tackling defender, with good passing and an ability to read the game, and is considered to be one of the world's best at his position.
ground_truth: 2012