Information:  - Upper Austria (; Austro-Bavarian: "Obaöstarreich") is one of the nine states or "Bundesländer" of Austria. Its capital is Linz. Upper Austria borders on Germany and the Czech Republic, as well as on the other Austrian states of Lower Austria, Styria, and Salzburg. With an area of and 1.437 million inhabitants, Upper Austria is the fourth-largest Austrian state by land area and the third-largest by population.  - Passau is a town in Lower Bavaria, Germany. It is also known as the Dreiflüssestadt or "City of Three Rivers," because the Danube is joined at Passau by the Inn from the south and the Ilz from the north.  - The Danube (, known by various names in other languages) is Europe's second-longest river, after the Volga River, and also the longest river in the European Union region. It is located in Central and Eastern Europe.  - Dingolfing-Landau is a district in Bavaria, Germany. It is bounded by (from the north and clockwise) the districts of Straubing-Bogen, Deggendorf, Rottal-Inn and Landshut.  - Passau is a district ( Kreis ) in the southeast of Bavaria . It encloses the city of Passau geographically from two sides . Neighboring districts are ( from the east clockwise ) Rottal - Inn , Deggendorf , Freyung - Grafenau . To the south it borders Austria .  - Munich (also in British English ) is the capital and largest city of the German state of Bavaria, on the banks of River Isar north of the Bavarian Alps. Munich is the third largest city in Germany, after Berlin and Hamburg, and the 12th biggest city of the European Union, with a population of above 1.5 million. The Munich Metropolitan Region is home to 5.8 million people.  - The Czech Republic, also known by the short name Czechia, is a nation state in Central Europe bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the northeast. The Czech Republic covers an area of with mostly temperate continental climate and oceanic climate. It is a unitary parliamentary republic, has 10.5 million inhabitants and the capital and largest city is Prague, with over 1.2 million residents. The Czech Republic includes the historical territories of Bohemia, Moravia, and Czech Silesia.  - Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Düsseldorf.  - Bavaria  is a federal state of Germany. Located in the German southeast with an area of 70,548 square kilometres (27,200 sq mi), Bavaria is the largest German state. Its territory comprises roughly a fifth of the total land area of Germany, and, with 12.9 million inhabitants, it is Germany's second most populous state. Munich, Bavaria's capital and largest city, is the third largest city in Germany.  - The Ilz is a river running through the Bavarian Forest, Germany. It is a left tributary of the Danube and 65 km in length, during which it travels down a height difference of ~780m.  - Freyung-Grafenau is a district in Bavaria, Germany. It is bounded by (from the south and clockwise) the districts of Passau, Deggendorf, Regen, the Czech Republic and by Austria.  - Lower Bavaria is one of the seven administrative regions of Bavaria, Germany, located in the east of the state.  - Rottal-Inn is a "Kreis" (district) in the southeastern part of Bavaria, Germany. Neighboring districts are (from the south clockwise) Altötting, Mühldorf, Landshut, Dingolfing-Landau and Passau. To the southeast is the Austrian state Upper Austria (Braunau).    What entity does 'passau ' has the relation 'located in the administrative territorial entity' with?
The answer to this question is:
lower bavaria