Question: What is the nationality of the most successful female ski racer ever?

Passages:
Kjetil André Aamodt (born 2 September 1971) is a former World Cup alpine ski racer from Norway, a champion in the Olympics, World Championships, and World Cup.  He is the most decorated ski racer from Norway. Annemarie Moser-Pröll (born 27 March 1953) is a former World Cup alpine ski racer from Austria.  Born in Kleinarl, Salzburg, she was the most successful female alpine ski racer during the 1970s, with six overall titles, including five consecutive.  Moser-Pröll celebrated her biggest successes in downhill, giant slalom and combined races.  In 1980, her last year as a competitor, she secured her third Olympic medal (and first gold) at Lake Placid and won five World Cup races.  Her younger sister Cornelia Pröll is also a former Olympic alpine skier. Steven Irving "Steve" Mahre (born May 10, 1957, in Yakima, Washington) is a former World Cup alpine ski racer and younger twin brother (by four minutes) of ski racer Phil Mahre. Vassilis Dimitriadis (born August 22, 1978 in Belgium) is a retired alpine ski racer from Greece and the former Head coach of Greek National Ski Team.  He competed for Greece at the 1998 Winter Olympics, 2002 Winter Olympics, 2006 Winter Olympics and the 2010 Winter Olympics.  His best result was a 23rd place in the slalom in 2006.  He is widely considered as the best Greek alpine ski racer of all the time. Sara Takanashi (高梨 沙羅 , Takanashi Sara ) (born 8 October 1996) is a Japanese ski jumper.  She is the most successful female ski jumper to date, as well as one of the most successful athletes in the history of the sport, having won four World Cup titles (an all-time record shared with Matti Nykänen and Adam Małysz) and five World Championship medals.  In her six-year World Cup career, Takanashi has never finished lower than third in the overall season-long standings.  As of March 2017 she also shares the record for most individual World Cup victories—53—with Gregor Schlierenzauer. Janica Kostelić (] ; born 5 January 1982) is a former World Cup alpine ski racer and four-time Olympic gold medalist from Croatia.  In addition to the Olympics, she has won five gold medals at the World Championships.  In World Cup competition, she has won thirty individual races, three overall titles, three slalom titles, and four (unofficial) combined titles.  Kostelic's accomplishments in professional skiing have led some commentators, writers, and fellow ski racers to regard her as the greatest female ski racer of all time. [a] Verena "Vreni" Schneider (born 26 November 1964) is a retired ski racer from Switzerland.  She is the most successful alpine ski racer of her country, the third most successful female ski racer ever (after Lindsey Vonn and Annemarie Moser-Pröll) and was voted "Swiss Sportswoman of the Century". Varvara Vladimirovna Zelenskaya (Russian: Варвара Владимировна Зеленская , often transliterated as Warwara Zelenskaja; born October 5, 1972 in Petropavlovsk-Kamchatsky) is a retired Russian alpine ski racer.  She is the most successful Russian female World Cup ski racer, winning a total of 4 races (Svetlana Gladishiva is the only other Russian woman to win a World Cup race). Matthias Giraud also known as "Super Frenchie" ( born on September 24, 1983) is a professional skier and B.A.S.E. jumper.  He was born in Evreux, France and grew up skiing at St Gervais-les-Bains/ Megeve, France.  His first highly publicized accomplishment was the first ski B.A.S.E. jump off Mississippi Head on Mt Hood, Oregon.  Matthias Giraud started as a competitive ski racer, but moved on to freeskiing and later on big mountain skiing.  Matthias Giraud is known for combining BASE jumping with skiing and completed several first descents and ski BASE jumps across the globe including the first ski BASE jump off the Matterhorn in Switzerland.  He is also known for escaping an avalanche off Aiguille Croche in Megeve, France while performing a ski BASE jump with his friend Stefan Laude.  Matthias Giraud currently lives in Bend, Oregon. Lindsey Caroline Vonn ( ) (née Kildow ; born October 18, 1984) is an American World Cup alpine ski racer on the US Ski Team.  She has won four World Cup overall championships—one of only two female skiers to do so, along with Annemarie Moser-Pröll—with three consecutive titles in 2008, 2009, and 2010, plus another in 2012.  Vonn won the gold medal in downhill at the 2010 Winter Olympics, the first ever in the event for an American woman.  She has also won a record eight World Cup season titles in the downhill discipline (2008–2013, 2015, 2016), five titles in super-G (2009–2012, 2015), and three consecutive titles in the combined (2010–2012).

Supporting sentences:
Verena "Vreni" Schneider (born 26 November 1964) is a retired ski racer from Switzerland.  She is the most successful alpine ski racer of her country, the third most successful female ski racer ever (after Lindsey Vonn and Annemarie Moser-Pröll) and was voted "Swiss Sportswoman of the Century". Lindsey Caroline Vonn ( ) (née Kildow ; born October 18, 1984) is an American World Cup alpine ski racer on the US Ski Team.