Given the question: Information:  - The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic system, vertical datum). Elevation, or geometric height, is mainly used when referring to points on the Earth's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and depth is used for points below the surface.  - Umbrail Pass ( el. 2,501 metres ( 8,205 ft ) ) is a high mountain pass on the Swiss - Italian border connecting Santa Maria in Val Müstair with Bormio in the Adda valley . On the Italian side , it connects to the Stelvio Pass road . It is currently the highest paved road in Switzerland . The sign at the top of the pass gives its altitude as 2,503 meters above sea level , but the reference level for Swiss altitude measurements has changed since the sign was erected , leaving 2,501 meters as the correct value according to current methods . The pass is named after the `` Piz Umbrail '' , a nearby mountain peak . The road is entirely asphalted since 2015 . The last unpaved section was a 1.5 km stretch on the Swiss side between altitudes 1 883 m and 2 012 m.  - The Himalayas, or Himalaya, (or ) are a mountain range in Asia separating the plains of the Indian subcontinent from the Tibetan Plateau.  - A mountain range (also mountain barrier, belt, or system) is a geographic area containing numerous geologically related mountains. A mountain system or system of mountain ranges, sometimes is used to combine several geological features that are geographically (regionally) related. On Earth, most significant mountain ranges are the result of plate tectonics, though mountain ranges are formed by a range of processes, are found on many planetary mass objects in the Solar System and are likely a feature of most terrestrial planets.  - The (plural: "") is a basic administrative division in Italy, roughly equivalent to a township or municipality.  - Mana Pass (el. ), alternatively Mna La, Chirbitya, Chirbitya-la, or Dungri La, is a mountain pass in the Himalayas on the border between India and Tibet. It appears to now be the highest vehicle-accessible pass in the world, containing a road constructed in the 2005-2010 period for the Indian military by the Border Roads Organisation and visible on 2011 imagery on visual globe systems such as Google Earth. The well-graded gravel-dirt road is higher on the Indian side than the new road on the Tibetan side, and rises to on the Indian side of the border, 250m west of the low point of the Mana Pass.  - Müstair is a village in the Val Müstair municipality in the district of Inn in the Swiss canton of Graubünden. In 2009 Müstair merged with Fuldera, Lü, Switzerland, Santa Maria Val Müstair, Tschierv and Valchava to form Val Müstair.   - The Province of Sondrio is in the Lombardy region of northern Italy. Its provincial capital is the town Sondrio. As of 2016, it has a population of 181,712.   - A mountain pass is a route through a mountain range or over a ridge. Since many of the world's mountain ranges have presented formidable barriers to travel, passes have been important since before recorded history, and have played a key role in trade, war, and migration. At lower elevations it may be called a hill pass. The highest pass is Mana Pass, located in the Himalayas on the border between India and China.  - Lombardy ( Lombard: "Lombardia", ) is one of the twenty administrative regions of Italy, in the northwest of the country, with an area of 23,844 square kilometres (9,206 sq mi). About 10 million people, forming one-sixth of Italy's population, live in Lombardy and about a fifth of Italy's GDP is produced in the region, making it the most populous and richest region in the country and one of the richest regions in Europe. Milan, Lombardy's capital, is the second-largest city and the largest metropolitan area in Italy.  - Recorded history or written history is a historical narrative based on a written record or other documented communication. Recorded history can be contrasted with other narratives of the past, such as mythological, oral or archeological traditions.  - Bormio is a town and "comune" with a population of about 4,100 located in the Province of Sondrio, Lombardy region of the Alps in northern Italy.  - Valchava is a village in the Val Müstair ("Müstair valley") of the canton of Graubünden (Grisons), Switzerland. It was an independent municipality in the district of Inn until on 1 January 2009 Valchava merged with Fuldera, Lü, Müstair, Santa Maria Val Müstair and Tschierv to form Val Müstair.  - Val Müstair is a municipality in the district of Inn in the Swiss canton of Graubünden. It was formed on 1 January 2009 through the merger of Tschierv, Fuldera, Lü, Valchava, Santa Maria Val Müstair and Müstair.  - A ridge or mountain ridge is a geological feature consisting of a chain of mountains or hills that form a continuous elevated crest for some distance. Ridges are usually termed hills or mountains as well, depending on size.   - Tschierv is a village in the Val Müstair municipality in the district of Inn in the Swiss canton of Graubünden. In 2009 Tschierv merged with Fuldera, Lü, Müstair, Santa Maria Val Müstair and Valchava to form the municipality of Val Müstair.  - Fuldera is a village in the Val Müstair municipality in the district of Inn in the Swiss canton of Graubünden. In 2009 Fuldera merged with Lü, Müstair, Santa Maria Val Müstair, Tschierv and Valchava to form the municipality of Val Müstair.  - Italy, officially the Italian Republic, is a unitary parliamentary republic in Europe. Located in the heart of the Mediterranean Sea, Italy shares open land borders with France, Switzerland, Austria, Slovenia, San Marino and Vatican City. Italy covers an area of and has a largely temperate seasonal climate and Mediterranean climate; due to its shape, it is often referred to in Italy as "lo Stivale" (the Boot). With 61 million inhabitants, it is the fourth most populous EU member state.  - The Alps are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across eight Alpine countries: Austria, France, Germany, Italy, Liechtenstein, Monaco, Slovenia, and Switzerland. The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided. Extreme shortening caused by the event resulted in marine sedimentary rocks rising by thrusting and folding into high mountain peaks such as Mont Blanc and the Matterhorn. Mont Blanc spans the FrenchItalian border, and at is the highest mountain in the Alps. The Alpine region area contains about a hundred peaks higher than 4000 metres (just over 13,000 feet).  - Santa Maria Val Müstair "(Romansh: Soncha Maria)" is a village in the Val Müstair municipality in the district of Inn in the Swiss canton of Graubünden. In 2009 Santa Maria Val Müstair merged with Lü, Müstair, Fuldera, Tschierv and Valchava to form the municipality of Val Müstair.  - China, officially the People's Republic of China (PRC), is a unitary sovereign state in East Asia. With a population of over 1.381 billion, it is the world's most populous country. The state is governed by the Communist Party of China, and its capital is Beijing. It exercises jurisdiction over 22 provinces, five autonomous regions, four direct-controlled municipalities (Beijing, Tianjin, Shanghai, and Chongqing), and two mostly self-governing special administrative regions (Hong Kong and Macau), and claims sovereignty over Taiwan. The country's major urban areas include Shanghai, Guangzhou, Beijing, Chongqing, Shenzhen, Tianjin and Hong Kong. China is a great power and a major regional power within Asia, and has been characterized as a potential superpower.    After reading the paragraphs above, we are interested in knowing the entity with which 'umbrail pass' exhibits the relationship of 'located in the administrative territorial entity'. Find the answer from the choices below.  Choices: - austria  - canton  - china  - chongqing  - district  - earth  - east  - europe  - graubünden  - guangzhou  - hill  - hong kong  - india  - italy  - lombardy  - macau  - mana  - most  - mountain  - northern  - northwest  - of  - oral  - republic of china  - santa maria  - santa maria val müstair  - slovenia  - sondrio  - switzerland  - taiwan  - tianjin  - val müstair
The answer is:
graubünden