Question: Which body of water runs through the headquarters city of K+S?

full_context: Document 1: Kassel: Kassel (; spelled Cassel until 1928) is a city located on the Fulda River in northern Hesse, Germany. It is the administrative seat of the Regierungsbezirk Kassel and the district of the same name and had 200,507 inhabitants in December 2015. The former capital of the state of Hesse-Kassel has many palaces and parks, including the Bergpark Wilhelmshöhe, which is a UNESCO World Heritage Site. Kassel is also known for the "documenta" exhibitions of contemporary art. Kassel has a public university with 25,000 students (2018) and a multicultural population (39% of the citizens in 2017 had a migration background).
Document 2: Alghanim Industries: Alghanim Industries is one of the largest privately owned companies in the Persian Gulf region, predominantly in Kuwait. A multinational company in outlook with operations in 40 countries, Alghanim Industries is a multibillion-dollar conglomerate with more than 30 businesses. They also fund projects and provide loans for non-UAE/Middle East countries. Alghanim Industries claimed that it collected revenues of $2.5 billion in 2009, although has not disclosed its financial standing since.
Document 3: Wingas: Wingas GmbH is a gas distribution company located in Kassel, Germany. It is a subsidiary of Gazprom, which held its shares through W&G Beteilligungs-GmbH & Co. KG.
Document 4: Auestadion: Auestadion is a multi-use stadium in Kassel, Germany close to the Karlsaue park. It is used mostly for football matches and is the home stadium of KSV Hessen Kassel. The stadium is able to hold 18000 people. It was opened on 23 August 1953, and renovated between 1983-1993 and between 2006-2008.
Document 5: K+S: K+S AG (formerly" Kali und Salz GmbH") is a German chemical company headquartered in Kassel. The company is Europe’s largest supplier of potash for use in fertilizer and, after the acquisition of Morton Salt, the world's largest salt producer. The firm also produces and distributes other mineral fertilizers, such as those from magnesium and sulphur. K+S is mainly active in Europe, North and South America with more than 14,000 employees worldwide (2014).
Document 6: Klarenthal: Klarenthal is a borough of Wiesbaden, capital of the federal state of Hesse, Germany. The community, situated on the slopes of the Taunus Mountains, was planned by architect and urban planner Ernst May in the style of a commuter town in the early 1960s. It was built on free arable land between the railway line to Bad Schwalbach and Klarenthaler Straße, overlooking the city center of Wiesbaden proper. Klarenthal consists mainly of large multi-family homes and residential high-rise buildings, surrounded with lots of green space, as well as many townhouses. The ground-breaking ceremony was held on September 11, 1964 and the first residents moved in in late February 1966. Today, over 10,000 people live there.
Document 7: Thuringia: The German higher education system comprises two forms of academic institutions: universities and polytechnics (Fachhochschule). The University of Jena is the biggest amongst Thuringia's four universities and offers nearly every discipline. It was founded in 1558, and today has 21,000 students. The second-largest is the Technische Universität Ilmenau with 7,000 students, founded in 1894, which offers many technical disciplines such as engineering and mathematics. The University of Erfurt, founded in 1392, has 5,000 students today and an emphasis on humanities and teacher training. The Bauhaus University Weimar with 4,000 students is Thuringia's smallest university, specialising in creative subjects such as architecture and arts. It was founded in 1860 and came to prominence as Germany's leading art school during the inter-war period, the Bauhaus.
Document 8: Strasbourg: Strasbourg, well known as centre of humanism, has a long history of excellence in higher-education, at the crossroads of French and German intellectual traditions. Although Strasbourg had been annexed by the Kingdom of France in 1683, it still remained connected to the German-speaking intellectual world throughout the 18th century and the university attracted numerous students from the Holy Roman Empire, including Goethe, Metternich and Montgelas, who studied law in Strasbourg, among the most prominent. Nowadays, Strasbourg is known to offer among the best university courses in France, after Paris.
Document 9: Kassel-Wilhelmshöhe station: Kassel-Wilhelmshöhe is a railway station in the city of Kassel, in the German state of Hesse. It is the city's most important railway station, as it is connected to the Hanover-Würzburg high-speed rail line, with InterCityExpress services calling at the station.
Document 10: Thuringia: Mining was important in Thuringia since the later Middle Ages, especially within the mining towns of the Thuringian Forest such as Schmalkalden, Suhl and Ilmenau. Following the industrial revolution, the old iron, copper and silver mines declined because the competition from imported metal was too strong. On the other hand, the late 19th century brought new types of mines to Thuringia: the lignite surface mining around Meuselwitz near Altenburg in the east of the Land started in the 1870s, and two potash mining districts were established around 1900. These are the Südharzrevier in the north of the state, between Bischofferode in the west and Roßleben in the east with Sondershausen at its centre, and the Werrarevier on the Hessian border around Vacha and Bad Salzungen in the west. Together, they accounted for a significant part of the world's potash production in the mid-20th century. After the reunification, the Südharzrevier was abandoned, whereas K+S took over the mines in the Werrarevier. Between 1950 and 1990, uranium mining was also important to cover the Soviet Union's need for this metal. The centre was Ronneburg near Gera in eastern Thuringia and the operating company Wismut was under direct Soviet control.
Document 11: Botanischer Garten Kassel: The Botanischer Garten Kassel, also known as the Botanischer Garten der Stadt Kassel, is a municipal botanical garden located in the Park Schönfeld at Bosestraße 15, Kassel, Hesse, Germany. It is open daily without charge.
Document 12: Kharasan mine: The Kharasan mine is a large in-situ leaching mine located in the southern part of Kazakhstan in South Kazakhstan Region. Kharasan represents one of the largest uranium reserves in Kazakhstan having estimated reserves of 59.3 million tonnes of ore grading 0.074% uranium.
Document 13: Hanover: Various industrial businesses are located in Hannover. The Volkswagen Commercial Vehicles Transporter (VWN) factory at Hannover-Stöcken is the biggest employer in the region and operates a huge plant at the northern edge of town adjoining the Mittellandkanal and Motorway A2. Jointly with a factory of German tire and automobile parts manufacturer Continental AG, they have a coal-burning power plant. Continental AG, founded in Hanover in 1871, is one of the city's major companies, as is Sennheiser. Since 2008 a take-over is in progress: the Schaeffler Group from Herzogenaurach (Bavaria) holds the majority of the stock but were required due to the financial crisis to deposit the options as securities at banks. TUI AG has its HQ in Hanover. Hanover is home to many insurance companies, many of which operate only in Germany. One major global reinsurance company is Hannover Re, whose headquarters are east of the city centre.
Document 14: Fuldabrück: Fuldabrück is a municipality in the district of Kassel, in Hesse, Germany. It is situated along the Fulda river, 8 kilometers south of Kassel. The municipality of Fuldabrück consists of the former independent villages Bergshausen, Dittershausen, Dennhausen and Dörnhagen.
Document 15: Kas: Kas is the brand name of soft drink produced by PepsiCo. It is made in grapefruit, orange (yellow), lemon (greenish-yellow), bitter (herbal extracts), and apple flavors. Kasfruit juices are also offered in multiple flavors. Kas is available in Spain, Mexico and France, and was available in Portugal, Brazil and Argentina during the 1990s.
ground_truth: Fulda
sub_queries: K+S >> headquarters location Answer: Kassel
Kassel >> located in or next to body of water Answer: Fulda