Context: An airline is a company that provides air transport services for traveling passengers and freight. Airlines utilize aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body., Opfikon (in the local Swiss German dialect: )<ref name="ks/gs">Andres Kristol/Gabrielle Schmid, "Opfikon ZH (Bülach)" in: "Dictionnaire toponymique des communes suisses  Lexikon der schweizerischen Gemeindenamen  Dizionario toponomastico dei comuni svizzeri (DTS|LSG)", Centre de dialectologie, Université de Neuchâtel, Verlag Huber, Frauenfeld/Stuttgart/Wien 2005, ISBN 3-7193-1308-5 and Éditions Payot, Lausanne 2005, ISBN 2-601-03336-3, p. 680f.</ref> is the name of a municipality in the Swiss canton of Zürich, located in the district of Bülach., The Canton of Zürich has a population (as of ) of . The canton is located in the northeast of Switzerland and the city of Zürich is the capital of the canton. The official language is German. The local Swiss German dialect called "Züritüütsch" is commonly spoken. In English the name of the canton is often written without an umlaut., Geneva Airport , formerly and still unofficially known as "Cointrin Airport", is the international airport of Geneva, the second most populous city in Switzerland. It is located northwest of the city centre. It reached 15 million passengers for the first time in December 2014 and serves as a hub for Swiss International Air Lines, easyJet Switzerland and Etihad Regional. Geneva features a route network of flights mainly to European metropolitan and leisure destinations as well as some long-haul routes to North America, China and the Middle East, amongst them Swiss International Air Lines' only long-haul service (to New York City) outside of Zürich., A partnership is an arrangement where parties, known as partners, agree to cooperate to advance their mutual interests. The partners in a partnership may be individuals, businesses, interest-based organizations, schools, governments or combinations. Organizations may partner together to increase the likelihood of each achieving their mission and to amplify their reach. A partnership may result in issuing and holding equity or may be only governed by a contract. Partnership agreements can be formed in the following areas: , Rümlang is a municipality in the district of Dielsdorf in the canton of Zürich in Switzerland, and belongs to the Glatt Valley (German: "Glattal"). Zürich Airport is partially located in Rümlang., Kloten is a municipality in the district of Bülach in the canton of Zürich in Switzerland, and belongs to the Glatt Valley., Edelweiss Air is a Swiss leisure airline wholly owned by Swiss International Air Lines and the Lufthansa Group . It operates flights to European and intercontinental destinations from its base at Zürich Airport ., Germanium is a chemical element with symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. Unlike silicon, it is too reactive to be found naturally on Earth in the free (elemental) state., In the airline industry, a focus city is a destination from which an airline operates several point-to-point routes. Thus, a focus city primarily caters to the local market rather than to connecting passengers. However, with the term's expanded usage, a focus city may also function as a small-scale hub. Allegiant Air, JetBlue and Frontier Airlines are examples of airlines that consider some of their destinations to be focus cities., Oberglatt is a municipality in the district of Dielsdorf in the canton of Zürich in Switzerland, and belongs to the Glatt Valley. Zürich Airport is partially in Oberglatt., Zürich Airport, also known as Kloten Airport, is the largest international airport of Switzerland and the principal hub of Swiss International Air Lines. It serves Zürich, Switzerland's largest city, and, with its surface transport links, much of the rest of the country. The airport is located north of central Zürich, in the municipalities of Kloten, Rümlang, Oberglatt, Winkel and Opfikon, all of which are within the canton of Zürich., Swissair AG/S.A. (Schweizerische Luftverkehr-AG; : S.A. Suisse pour la Navigation Aérienne) was for many years the national airline of Switzerland., An international airport is an airport that offers customs and immigration facilities for passengers travelling between countries. International airports are typically larger than domestic airports and often feature longer runways and facilities to accommodate the heavier aircraft commonly used for international and intercontinental travel. International airports often also host domestic flights. Some, such as Frankfurt Airport in Germany are very large; others such as Fa'a' International Airport in Tahiti, are quite small., Switzerland, officially the Swiss Confederation, is a federal republic in Europe. It consists of 26 cantons, and the city of Bern is the seat of the federal authorities. 
The country is situated in Western-Central Europe, and is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is a landlocked country geographically divided between the Alps, the Swiss Plateau and the Jura, spanning an area of . While the Alps occupy the greater part of the territory, the Swiss population of approximately eight million people is concentrated mostly on the plateau, where the largest cities are to be found: among them are the two global cities and economic centres Zürich and Geneva., Swiss International Air Lines AG (short Swiss, stylized as SWISS) is the flag carrier airline of Switzerland operating scheduled services in Europe and to North America, South America, Africa and Asia. Its main hub is Zurich Airport, with a focus city operation at Geneva Airport. The airline was formed after the 2001 bankruptcy of Swissair, Switzerland's former flag carrier., EDELWEISS (Expérience pour DEtecter Les WIMPs En Site Souterrain) is a dark matter search experiment located at the Modane Underground Laboratory in France. The experiment uses cryogenic detectors, measuring both the phonon and ionization signals produced by particle interactions in germanium crystals. This technique allows nuclear recoils events to be distinguished from electron recoil events., Subject: edelweiss air, Relation: headquarters_location, Options: (A) austria (B) bern (C) canton (D) central (E) france (F) frankfurt (G) geneva (H) germany (I) global (J) hard (K) industry (L) kloten (M) lausanne (N) mission (O) neuchâtel (P) new york (Q) new york city (R) north america (S) opfikon (T) rümlang (U) switzerland (V) zürich
Output: kloten