Q:Information:  - The Paznaun is a valley in Tyrol, Austria, leading south-west from Pians (856 m) to the Bielerhöhe (2071 m), a mountain pass at the border of Vorarlberg and Tyrol.  - Arlberg is a mountain range or massif between Vorarlberg and Tyrol in Austria.  - Sanna is a river in Austria formed near Tobadill by the confluence of the rivers Rosanna ( 35 km , from Arlberg and Stanzertal valley ) and Trisanna ( 35 km , from Silvretta and Paznaun ) . The tributary to the Inn River is only 8 kilometres ( 5.0 mi ) long and considered one of the shortest rivers in Europe , with the places Pians , Grins and Landeck situated at its waterfront . The whitewater river is used for kayaking and was the site of the 1996 world championships .  - Landeck is a town in the Austrian state of Tyrol, the capital of the district of Landeck.  - "Pians also refers to the alumni association composed of St. Pius X Seminary and Sancta Maria Mater et Regina Seminarium alumni."  - In geology, a massif (or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term is also used to refer to a group of mountains formed by such a structure.  - Tobadill is a tiny municipality in the district of Landeck in the Austrian state of Tyrol located 4 km west of the city of Landeck.  - Vorarlberg is the westernmost federal state ("Bundesland") of Austria. Although it has the second-smallest area (Vienna is the smallest) and population (Burgenland is less populated), it has the second-highest population density (after Vienna). It borders three countries: Germany (Bavaria and Baden-Württemberg via Lake Constance), Switzerland (Graubünden and St. Gallen) and Liechtenstein. The only Austrian state that shares a border with Vorarlberg is Tyrol to the east.    After reading the paragraphs above, we are interested in knowing the entity with which 'sanna ' exhibits the relationship of 'located in the administrative territorial entity'. Find the answer from the choices below.  Choices: - austria  - bavaria  - burgenland  - district  - germany  - landeck  - mountain  - of  - switzerland  - tyrol  - vorarlberg  - west
A:
tyrol