Question: The southeastern frontier of the country that shares Lake Constance with Germany and the country the von Trapp family escapes to in Sound of Music is an example of what?

full_context: Document 1: 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.
Document 2: 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 3: Rhine: Near Tamins-Reichenau the Anterior Rhine and the Posterior Rhine join and form the Rhine. The river makes a distinctive turn to the north near Chur. This section is nearly 86 km long, and descends from a height of 599 m to 396 m. It flows through a wide glacial alpine valley known as the Rhine Valley (German: Rheintal). Near Sargans a natural dam, only a few metres high, prevents it from flowing into the open Seeztal valley and then through Lake Walen and Lake Zurich into the river Aare. The Alpine Rhine begins in the most western part of the Swiss canton of Graubünden, and later forms the border between Switzerland to the West and Liechtenstein and later Austria to the East.
Document 4: Rhine: The Rhine (Latin: Rhenus, Romansh: Rein, German: Rhein, French: le Rhin, Dutch: Rijn) is a European river that begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the Swiss - Liechtenstein, Swiss - Austrian, Swiss - German and then the Franco - German border, then flows through the German Rhineland and the Netherlands and eventually empties into the North Sea.
Document 5: 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 6: 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 7: Principality of Bayreuth: The Principality of Bayreuth () or Margraviate of Brandenburg-Bayreuth ("Markgraftum Brandenburg-Bayreuth") was an immediate territory of the Holy Roman Empire, ruled by a Franconian branch of the Hohenzollern dynasty. Since Burgrave Frederick VI of Nuremberg was enfeoffed with the Margraviate of Brandenburg in 1415/17, the Hohenzollern princes transferred the margravial title to their Franconian possessions, though the principality never had been a march. Until 1604 they used Plassenburg Castle in Kulmbach as their residence, hence their territory was officially called the Principality of Kulmbach or Margraviate of Brandenburg-Kulmbach until the Empire's dissolution in 1806.
Document 8: East Prussia: Although Brandenburg was a part of the Holy Roman Empire, the Prussian lands were not within the Holy Roman Empire and were with the administration by the Teutonic Order grandmasters under jurisdiction of the Emperor. In return for supporting Emperor Leopold I in the War of the Spanish Succession, Elector Frederick III was allowed to crown himself "King in Prussia" in 1701. The new kingdom ruled by the Hohenzollern dynasty became known as the Kingdom of Prussia. The designation "Kingdom of Prussia" was gradually applied to the various lands of Brandenburg-Prussia. To differentiate from the larger entity, the former Duchy of Prussia became known as Altpreußen ("Old Prussia"), the province of Prussia, or "East Prussia".
Document 9: 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 10: 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 11: Switzerland: By 1200, the Swiss plateau comprised the dominions of the houses of Savoy, Zähringer, Habsburg, and Kyburg. Some regions (Uri, Schwyz, Unterwalden, later known as Waldstätten) were accorded the Imperial immediacy to grant the empire direct control over the mountain passes. With the extinction of its male line in 1263 the Kyburg dynasty fell in AD 1264; then the Habsburgs under King Rudolph I (Holy Roman Emperor in 1273) laid claim to the Kyburg lands and annexed them extending their territory to the eastern Swiss plateau.
Document 12: Rhine: The Rhine emerges from Lake Constance, flows generally westward, as the Hochrhein, passes the Rhine Falls, and is joined by its major tributary, the river Aare. The Aare more than doubles the Rhine's water discharge, to an average of nearly 1,000 m3/s (35,000 cu ft/s), and provides more than a fifth of the discharge at the Dutch border. The Aare also contains the waters from the 4,274 m (14,022 ft) summit of Finsteraarhorn, the highest point of the Rhine basin. The Rhine roughly forms the German-Swiss border from Lake Constance with the exceptions of the canton of Schaffhausen and parts of the cantons of Zürich and Basel-Stadt, until it turns north at the so-called Rhine knee at Basel, leaving Switzerland.
Document 13: Kingdom of Bohemia: After the dissolution of the Holy Roman Empire in 1806, the territory became part of the Habsburg Austrian Empire, and subsequently the Austro-Hungarian Empire from 1867. Bohemia retained its name and formal status as a separate Kingdom of Bohemia until 1918, known as a crown land within the Austro-Hungarian Empire, and its capital Prague was one of the empire's leading cities. The Czech language (called the Bohemian language in English usage until the 19th century) was the main language of the Diet and the nobility until 1627 (after the Bohemian Revolt was suppressed). German was then formally made equal with Czech and eventually prevailed as the language of the Diet until the Czech National Revival in the 19th century. German was also widely used as the language of administration in many towns after the return of Germans immigrated and populated some areas of the country in the 13th century after the Migration Period. The royal court used the Czech, Latin, and German languages, depending on the ruler and period.
Document 14: 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 15: Margraviate of Austria: The Margraviate of Austria was a southeastern frontier march of the Holy Roman Empire created in 976 out of the territory on the border with the Principality of Hungary. Originally under the overlordship of the Dukes of Bavaria, it was ruled by margraves of the Franconian Babenberg dynasty. It became an Imperial State in its own right, when the Babenbergs were elevated to Dukes of Austria in 1156.
ground_truth: march
sub_queries: sound of music where did they escape to Answer: Switzerland
Besides Germany and Switzerland , where else is Lake Constance? Answer: Austria
Margraviate of Austria >> instance of Answer: march