Context: Dortmund  is an independent city in North Rhine-Westphalia, Germany. It is in the middle part of the state and is considered to be the administrative, commercial and cultural centre of the eastern Ruhr area. Its population of 581,612 (2015) makes it the 8th largest city in Germany. Moreover, Dortmund is the largest city by area and population in the Ruhr Area, an urban area with some 5.1 million (2011) inhabitants which is the largest urban agglomeration in Germany., Cologne is the largest city in the German federal State of North Rhine-Westphalia and the fourth-largest city in Germany (after Berlin, Hamburg, and Munich). It is located within the Rhine-Ruhr metropolitan region, one of the major European metropolitan regions and the largest in Germany, with more than ten million inhabitants., 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., Essen (Latin: "Assindia") is a city in North Rhine-Westphalia, Germany. Its population of approximately 589,000 makes it the ninth-largest city in Germany. It is the central city of the northern (Ruhr) part of the Rhine-Ruhr metropolitan area and seat to several of the region's authorities., Emmerich am Rhein ; Dutch : Emmerik , meaning Emmerich on the Rhine is a city on the lower part of the River Rhine in the northwest of the German federal state of North Rhine - Westphalia . In terms of local government organization , it is a medium - sized city belonging to the district of Kleve in the administrative region ( Regierungsbezirk ) of Düsseldorf ., The Ruhr, or the Ruhr district, Ruhr region, Ruhr area or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km² and a population of eight and a half million, it is the largest urban agglomeration in Germany, and third-largest in the European Union. It consists of several large, industrial cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 12 million people, which is among the largest in Europe., The Netherlands  is the main constituent country of the Kingdom of the Netherlands. It is a densely populated country located in Western Europe with three island territories in the Caribbean. The European part of the Netherlands borders Germany to the east, Belgium to the south, and the North Sea to the northwest, sharing maritime borders with Belgium, the United Kingdom, and Germany. The largest cities in the Netherlands are Amsterdam, Rotterdam, The Hague and Utrecht. Amsterdam is the country's capital, while The Hague holds the Dutch seat of government and parliament. The name "Holland" is used to refer informally to the whole of the country of the Netherlands., The Rhine (, , ) is a European river that begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the 
Swiss-Austrian, Swiss-Liechtenstein, Swiss-German and then the Franco-German border, then flows through the Rhineland and eventually empties into the North Sea in the Netherlands. 
The largest city on the river Rhine is Cologne, Germany, with a population of more than 1,050,000 people. It is the second-longest river in Central and Western Europe (after the Danube), at about , with an average discharge of about ., The North Sea is a marginal sea of the Atlantic Ocean located between Great Britain, Scandinavia, Germany, the Netherlands, Belgium, and France. An epeiric (or "shelf") sea on the European continental shelf, it connects to the ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, with an area of around ., North Rhine-Westphalia (, commonly shortened to NRW) is the most populous state of Germany, with a population of approximately 18 million, and the fourth largest by area. Its capital is Düsseldorf; the most populous city is Cologne. Four of Germany's ten largest citiesCologne, Düsseldorf, Dortmund, and Essenare located within the state, as well as the largest metropolitan area on the European continent, Rhine-Ruhr., Düsseldorf Messe is a trade fair ground and organizer, based in Düsseldorf, Germany. With a workforce of 1,459 employees worldwide (2006) and a total exhibition space of 306,000 m (of which 262,700 m is indoors) in Düsseldorf, the company is one of the largest in the industry. More than 40 annual fairs are staged at the premises in Düsseldorf, including 23 leading events in their respective sectors., The Düssel is a small right tributary of the River Rhine in North Rhine Westphalia, Germany. Its source is east of Wülfrath. It flows westward through the Neander Valley where the fossils of the first Neanderthal man were found in 1856. At Düsseldorf it forms a river delta by splitting into four streams (Nördliche Düssel, Südliche Düssel, Kittelbach, Brückerbach), which all join the Rhine after a few kilometers., Westphalia is a region in northwestern Germany and one of the three historic parts of the state of North Rhine-Westphalia. It has an area of 7,802 sq mi (20,208 km²) and 7.9 million inhabitants., The Rhineland is the name used for a loosely defined area of Western Germany along the Rhine River, chiefly its middle section., The Alpine region of Switzerland, conventionally referred to as the Swiss Alps (, ), represents a major natural feature of the country and is, along with the Swiss Plateau and the Swiss portion of the Jura Mountains, one of its three main physiographic regions. The Swiss Alps extend over both the Western Alps and the Eastern Alps, encompassing an area sometimes called "Central Alps". While the northern ranges from the Bernese Alps to the Appenzell Alps are entirely in Switzerland, the southern ranges from the Mont Blanc massif to the Bernina massif are shared with other countries such as France, Italy, Austria and Liechtenstein., 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., Düsseldorf (Low Franconian, Ripuarian: "Düsseldörp" ) is the capital city of the German state of North Rhine-Westphalia and the seventh most populous city in Germany. Düsseldorf is an international business and financial centre, renowned for its fashion and trade fairs. The city is headquarters to one Fortune Global 500 and two DAX companies. Messe Düsseldorf organises nearly one fifth of premier trade shows., 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)., The Rhine-Ruhr metropolitan region is the largest metropolitan region in Germany with over 11 million inhabitants. It is of polycentric nature and the only megacity in Germany. It covers an area of 7,110 square kilometers and lies entirely within the federal state of North Rhine-Westphalia. The Rhine-Ruhr metropolitan region spreads from Dortmund-Bochum-Essen-Duisburg (Ruhr Area) in the north, to the urban areas of the cities of Mönchengladbach, Düsseldorf (the state capital), Wuppertal, Leverkusen, Cologne (the region's largest and Germany's fourth largest city), and Bonn in the south. The location of the Rhine-Ruhr at the heart of the European blue banana makes it well connected to other major European cities and metropolitan areas like the Randstad, the Flemish Diamond and the Frankfurt Rhine Main Region., The Lower Rhine region or Niederrhein is a region around the Lower Rhine section of the river Rhine in North Rhine-Westphalia, Germany between approximately Oberhausen and Krefeld in the East and the Dutch border around Kleve in the West. As the region can be defined either geographically, linguistically, culturally, or by political, economic and traffic relations throughout the centuries, as well as by more recent political subdivisions, its precise borders are disputable and occasionally may be seen as extending beyond the Dutch border. Yet, while the Dutch half of the Lower Rhine geographic area is called Nederrijn in Dutch, it is a separate territory from the adjoining German Niederrhein region, despite both names are a translation of the other. , Cleves , is a town in the Lower Rhine region of northwestern Germany near the Dutch border and the River Rhine. From the 11th century onwards, Cleves was capital of a county and later a duchy. Today, Cleves is the capital of the district of Cleves in the German state of North Rhine-Westphalia. The city is home to one of the campuses of the Rhine-Waal University of Applied Sciences., Subject: emmerich am rhein, Relation: located_on_terrain_feature, Options: (A) alps (B) appenzell alps (C) atlantic ocean (D) caribbean (E) eastern europe (F) english channel (G) europe (H) germany (I) hamburg (J) lower rhine region (K) north sea (L) norwegian sea (M) rhine (N) river delta (O) ruhr (P) scandinavia (Q) switzerland (R) western europe (S) westphalia
Output: lower rhine region