Question: Which body of water is by the city where Wingas has its headquarters?

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: 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 3: 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 4: RWE Supply & Trading CZ: RWE Supply & Trading CZ is the largest natural gas trading company in the Czech Republic. It is owned by the German energy company RWE.
Document 5: 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 6: Guardian Pipeline: Guardian Pipeline is a small natural gas pipeline that brings gas from northern Illinois into Wisconsin. It is owned by ONEOK Partners, G.P.. It is operated by ONEOK Partners, L.P. Its FERC code is 184.
Document 7: 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 8: Private Wings: Private Wings Flugcharter GmbH is a German airline that was founded in 1991 and operates chartered corporate, cargo and air ambulance services out of Berlin Schönefeld Airport. Its head office is located in the General Aviation Terminal (Allgemeine Luftfahrt) on the property of Schönefeld Airport in Schönefeld, Brandenburg.
Document 9: 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 10: 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 11: 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 12: 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 13: 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 14: SAS Group: SAS AB (Scandinavian Airlines System Aktiebolag) (, , ), trading as SAS Group, is an airline holding company headquartered in the SAS Frösundavik Office Building in Solna Municipality, Sweden. It is the owner of the airlines Scandinavian Airlines and Scandinavian Airlines Ireland. SAS once owned 19.9% of the now defunct Spanish airline Spanair as well as shares in Estonian Air and Skyways Express. It also owns the aviation services companies SAS Business Opportunities, SAS Cargo Group, SAS Ground Services and SAS Technical Services. In addition, it holds minority ownership of Air Greenland. SAS Group is partially owned by the governments of Sweden and Denmark with a 21.4% and 14.3% ownership, respectively. The remaining 64.3% is held by private owners, of which Foundation Asset Management owns 7.6%. The company is listed on the Oslo Stock Exchange, the Stockholm Stock Exchange, and the Copenhagen Stock Exchange.
Document 15: Gass (Maharashtra): Gass is a village in Vasai Taluka, near Mumbai in the Maharashtra state of India. In addition to its Hindu residents, it had an approximate Roman Catholic population of 5000 in the year 2009. A really natural village owning a big lake, salt farming, and popular for green vegetables farming.
ground_truth: Fulda
sub_queries: Wingas >> headquarters location Answer: Kassel
Which is the body of water by Kassel ? Answer: Fulda