Question: What is the largest lake in the country where the characters in Sound of Music escaped to?

full_context: Document 1: Alps: Ski troops were trained for the war, and battles were waged in mountainous areas such as the battle at Riva Ridge in Italy, where the American 10th Mountain Division encountered heavy resistance in February 1945. At the end of the war, a substantial amount of Nazi plunder was found stored in Austria, where Hitler had hoped to retreat as the war drew to a close. The salt mines surrounding the Altaussee area, where American troops found 75 kilos of gold coins stored in a single mine, were used to store looted art, jewels, and currency; vast quantities of looted art were found and returned to the owners.
Document 2: Switzerland: Switzerland (/ˈswɪtsərlənd/), officially the Swiss Confederation (Latin: Confoederatio Helvetica, hence its abbreviation CH), is a country in Europe. While still named the "Swiss Confederation" for historical reasons, modern Switzerland is a federal directorial republic consisting of 26 cantons, with Bern as the seat of the federal authorities, called Bundesstadt ("federal city").[note 3] The country is situated in Western and Central Europe,[note 4] and is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is a landlocked country geographically divided between the Alps, the Swiss Plateau and the Jura, spanning an area of 41,285 km2 (15,940 sq mi). While the Alps occupy the greater part of the territory, the Swiss population of approximately 8 million people is concentrated mostly on the Plateau, where the largest cities are to be found: among them are the two global and economic centres, Zürich and Geneva.
Document 3: Switzerland: Switzerland lies between latitudes 45° and 48° N, and longitudes 5° and 11° E. It contains three basic topographical areas: the Swiss Alps to the south, the Swiss Plateau or Central Plateau, and the Jura mountains on the west. The Alps are a high mountain range running across the central-south of the country, comprising about 60% of the country's total area. The majority of the Swiss population live in the Swiss Plateau. Among the high valleys of the Swiss Alps many glaciers are found, totalling an area of 1,063 square kilometres (410 sq mi). From these originate the headwaters of several major rivers, such as the Rhine, Inn, Ticino and Rhône, which flow in the four cardinal directions into the whole of Europe. The hydrographic network includes several of the largest bodies of freshwater in Central and Western Europe, among which are included Lake Geneva (also called le Lac Léman in French), Lake Constance (known as Bodensee in German) and Lake Maggiore. Switzerland has more than 1500 lakes, and contains 6% of Europe's stock of fresh water. Lakes and glaciers cover about 6% of the national territory. The largest lake is Lake Geneva, in western Switzerland shared with France. The Rhône is both the main source and outflow of Lake Geneva. Lake Constance is the second largest Swiss lake and, like the Lake Geneva, an intermediate step by the Rhine at the border to Austria and Germany. While the Rhône flows into the Mediterranean Sea at the French Camarque region and the Rhine flows into the North Sea at Rotterdam in the Netherlands, about 1000 km apart, both springs are only about 22 km apart from each other in the Swiss Alps.
Document 4: Alps: Some high mountain villages, such as Avoriaz (in France), Wengen, and Zermatt (in Switzerland) are accessible only by cable car or cog-rail trains, and are car free. Other villages in the Alps are considering becoming car free zones or limiting the number of cars for reasons of sustainability of the fragile Alpine terrain.
Document 5: Switzerland: Switzerland (/ ˈswɪtsərlənd /), officially the Swiss Confederation, is a sovereign state in Europe. It consists of 26 cantons, and the city of Bern is the seat of the federal authorities. The federal republic is situated in Western - Central Europe, and is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is a landlocked country geographically divided between the Alps, the Swiss Plateau and the Jura, spanning a total area of 41,285 km (15,940 sq mi) (land area 39,997 km (15,443 sq mi)). While the Alps occupy the greater part of the territory, the Swiss population of approximately eight million people is concentrated mostly on the plateau, where the largest cities are to be found: among them are the two global cities and economic centres Zürich and Geneva.
Document 6: Swiss Alps: The Alps cover 65% of Switzerland's total 41,285 square kilometres (15,940 sq mi) surface area, making it one of the most alpine countries. Despite the fact that Switzerland covers only 14% of the Alps total 192,753 square kilometres (74,422 sq mi) area, 48 out of 82 alpine four - thousanders are located in the Swiss Alps and practically all of the remaining 34 are within 20 kilometres (12 mi) of the country's border.
Document 7: Alps: Major European rivers flow from Switzerland, such as the Rhine, the Rhone, the Inn, the Ticino and the Po, all of which have headwaters in the Alps and flow into neighbouring countries, finally emptying into the North Sea, the Mediterranean Sea, the Adriatic Sea and the Black Sea. Other rivers such as the Danube have major tributaries flowing into them that originate in the Alps. The Rhone is second to the Nile as a freshwater source to the Mediterranean Sea; the river begins as glacial meltwater, flows into Lake Geneva, and from there to France where one of its uses is to cool nuclear power plants. The Rhine originates in a 30 square kilometre area in Switzerland and represents almost 60 percent of water exported from the country. Tributary valleys, some of which are complicated, channel water to the main valleys which can experience flooding during the snow melt season when rapid runoff causes debris torrents and swollen rivers.
Document 8: Georg von Trapp: According to Maria von Trapp's memoirs, Georg von Trapp found himself in a vexing situation after the German takeover of Austria in 1938. He was offered a commission in the German Navy, a tempting proposition for a Captain without a navy, but decided to decline the offer, being opposed to Nazi ideology. Knowing that he could not decline the offer without the threat of arrest, possibly for his entire family, von Trapp decided to leave Austria. The family took a train to Italy, then sailed to the United States for their first concert tour, then in 1939 went back to Europe to tour Scandinavia, hoping to continue their concerts in cities beyond the reach of the Third Reich. During this time, they went back to Salzburg for a few months before returning to Sweden to finish the tour. From there, they traveled to Norway to begin the trip back to the United States in September 1939.
Document 9: The Sound of Music (film): The Sound of Music is a 1965 American musical drama film produced and directed by Robert Wise, and starring Julie Andrews and Christopher Plummer, with Richard Haydn and Eleanor Parker. The film is an adaptation of the 1959 stage musical of the same name, composed by Richard Rodgers with lyrics by Oscar Hammerstein II. The film's screenplay was written by Ernest Lehman, adapted from the stage musical's book by Lindsay and Crouse. Based on the memoir "The Story of the Trapp Family Singers" by Maria von Trapp, the film is about a young Austrian postulant in Salzburg, Austria, in 1938 who is sent to the villa of a retired naval officer and widower to be governess to his seven children. After bringing love and music into the lives of the family, she marries the officer and together with the children find a way to survive the loss of their homeland to the Nazis.
Document 10: Dude, Where's My Car?: Thwarted, the five alien women merge to become a giantess who swallows Tommy alive. The giantess then crawls out of the amusement center and chases Jesse and Chester. The cultists tell them to activate the Photon Accelerator Annihilation Beam on the Transfunctioner. However, the button that activates it is too far in to reach. At the last second, Chester remembers the nature show with the tool - using chimps and uses a straw to push the recessed button, thus destroying the alien (Tommy survives, but Christie breaks up with him in favor of Nelson). The protectors thank Jesse, Chester and the twins for saving the world, and erase their minds concerning the events. The protectors park the duo's car, a Renault Le Car, behind a mail truck for them to find the following morning. Jesse and Chester salvage their relationships with the twins and discover the special treat from the girls turns out to be matching knitted caps and scarves. The protectors leave a gift for their girlfriends (and, for the two men): Breast Enhancement Necklaces. The film ends with Jesse, Chester, and the twins going in Jesse's car out for Chinese food while arguing what the tattoo said on each other's back.
Document 11: Rhine: Lake Constance consists of three bodies of water: the Obersee ("upper lake"), the Untersee ("lower lake"), and a connecting stretch of the Rhine, called the Seerhein ("Lake Rhine"). The lake is situated in Germany, Switzerland and Austria near the Alps. Specifically, its shorelines lie in the German states of Bavaria and Baden-Württemberg, the Austrian state of Vorarlberg, and the Swiss cantons of Thurgau and St. Gallen. The Rhine flows into it from the south following the Swiss-Austrian border. It is located at approximately 47°39′N 9°19′E﻿ / ﻿47.650°N 9.317°E﻿ / 47.650; 9.317.
Document 12: Switzerland: Extending across the north and south side of the Alps in west-central Europe, Switzerland encompasses a great diversity of landscapes and climates on a limited area of 41,285 square kilometres (15,940 sq mi). The population is about 8 million, resulting in an average population density of around 195 people per square kilometre (500/sq mi). The more mountainous southern half of the country is far more sparsely populated than the northern half. In the largest Canton of Graubünden, lying entirely in the Alps, population density falls to 27 /km² (70 /sq mi).
Document 13: Spectre (2015 film): The two travel to the hotel and discover White's secret room where they find co-ordinates pointing to Oberhauser's operations base in the desert. They travel by train to the nearest station, but are once again confronted by Hinx; they engage in a fight throughout the train in which Mr Hinx is eventually thrown off the train by Bond with Swann's assistance. After arriving at the station, Bond and Swann are escorted to Oberhauser's base. There, he reveals that Spectre has been staging terrorist attacks around the world, creating a need for the Nine Eyes programme. In return Spectre will be given unlimited access to intelligence gathered by Nine Eyes. Bond is tortured as Oberhauser discusses their shared history: after the younger Bond was orphaned, Oberhauser's father, Hannes, became his temporary guardian. Believing that Bond supplanted his role as son, Oberhauser killed his father and staged his own death, subsequently adopting the name Ernst Stavro Blofeld and going on to form Spectre. Bond and Swann escape, destroying the base in the process, leaving Blofeld to apparently die during the explosion.
Document 14: The Sound of Music: The Sound of Music is a musical with music by Richard Rodgers, lyrics by Oscar Hammerstein II and a book by Howard Lindsay and Russel Crouse. It is based on the memoir of Maria von Trapp, The Story of the Trapp Family Singers. Set in Austria on the eve of the Anschluss in 1938, the musical tells the story of Maria, who takes a job as governess to a large family while she decides whether to become a nun. She falls in love with the children, and eventually their widowed father, Captain von Trapp. He is ordered to accept a commission in the German navy, but he opposes the Nazis. He and Maria decide on a plan to flee Austria with the children. Many songs from the musical have become standards, such as ``Edelweiss '',`` My Favorite Things'', ``Climb Ev'ry Mountain '',`` Do - Re-Mi'', and the title song ``The Sound of Music ''.
Document 15: The Sound of Music (film): Later that night at the festival, during their final number, the von Trapp family slip away and seek shelter at the nearby abbey, where Mother Abbess hides them in the cemetery crypt. Brownshirts soon arrive and search the abbey, but the family is able to escape using the caretaker's car. When the soldiers attempt to pursue, they discover their cars will not start as two nuns have removed parts of the engines. The next morning, after driving to the Swiss border, the von Trapp family make their way on foot across the frontier into Switzerland to safety and freedom.
ground_truth: Lake Geneva
sub_queries: sound of music where did they escape to Answer: Switzerland
What is the largest lake in Switzerland ? Answer: Lake Geneva