Question: Nobel Biocare is stationed next to an airport known as Kloten Airport, what is the airport?

Context paragraphs:
El Al Flight 432 attack: El Al Flight 432, was a Boeing 720-058B (a shortened Boeing 707-120B) that was attacked by a squad of four armed Palestinian militants, members of the Lebanese-based militant organization Popular Front for the Liberation of Palestine, while it was preparing for takeoff at the Zurich International Airport in Kloten on February 18, 1969.  The plane was on its way from Amsterdam to Tel Aviv via Zurich, and was due to take off at Zurich International Airport.  Several of the crew members were injured during the attack, and one later died of his injures.  The plane was severely damaged.  A greater disaster was averted when Mordechai Rahamim, an undercover Israeli security agent stationed on the plane, opened fire at the attackers and killed the squad leader.  Rahamim and the three surviving attackers were arrested and tried by Swiss authorities.  The attackers were found guilty and given prison sentences, while Rahamim was acquitted.

Air Force Base Hoedspruit: Air Force Base Hoedspruit (IATA: HDS, ICAO: FAHS) is an airbase of the South African Air Force.  It is located adjacent to the Kruger National Park.  In the late 1990s an unused portion of the base was converted into a civilian airport known as Eastgate Airport.  It was also an emergency landing site for the Space Shuttle.

Barrigada: Barrigada (Chamorro: Barigåda ) is a village in the United States territory of Guam.  A largely residential municipality, its main village is located south of the Antonio B. Won Pat International Airport near the intersections of Routes 8, 10, and 16.  The community east of the airport known as Barrigada Heights is considered an affluent neighborhood on the island, where homes have excellent views overlooking much of Guam including the island's airport and hotels along Tumon Bay.

Christmas tree (aviation): A "Christmas tree" was a type of alert area constructed by the United States Air Force for the Strategic Air Command (SAC) during the Cold War.  Oftentimes, bombers or tanker aircraft were stationed next to a readiness crew building (RCB), also known as "mole hole" facilities.  The alert apron, also known as an alert ramp, received the name "Christmas tree", because in planform it resembled a tree of the same name.

Mozes Kilangin International Airport: Timika Airport known as Mozes Kilangin Airport, is an airport in Timika, Papua, Indonesia (IATA: TIM, ICAO: WAYY old: WABP) .  The Airport is located 5 km north from town center.

Zürich Airport: Zürich Airport (German: "Flughafen Zürich" , IATA: ZRH, ICAO: LSZH ), 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 13 km north of central Zürich, in the municipalities of Kloten, Rümlang, Oberglatt, Winkel and Opfikon, all of which are within the canton of Zürich.

Craig Air Force Base: Craig Air Force Base near Selma, Alabama, was a U.S. Air Force Undergraduate Pilot Training (UPT) that closed in 1977.  Today the facility is a civilian airport known as Craig Field Airport and Industrial Complex (ICAO: KSEM; FAA: SEM).

Borderline (TV series): Borderline is a British mockumentary television comedy series devised by Michael Orton-Toliver and Chris Gau.  Narrated by Ralf Little, the series launched on 2 August 2016 on Channel 5.  The series follows the activity of a borderline agency working at a fictional airport known as ‘Northend Airport’.

Martha Lake Airport Park: Martha Lake Airport Park is a county park located in Martha Lake, Snohomish County, Washington.  It was originally a private-use airport known as the Martha Lake Airport that was closed in the late 1990s and sold to the county in 2000.  The 28.76 acre park was opened in 2010 and features athletic fields for soccer and softball and a skate park.  A large glacial erratic on the property, one of several in the county, is used for bouldering (rock climbing).

Nobel Biocare: Nobel Biocare is a company that manufactures dental implants and CAD/CAM-based individualized prosthetics and is headquartered in Kloten, Switzerland near the Zürich Airport.  Nobel Biocare in its current form was founded in 2002.  It originates in a partnership formed in 1978 between Swedish medical researcher Professor Per-Ingvar Brånemark and Bofors, a Swedish company, to industrialize Brånemark’s discovery of osseointegration (the fusing of titanium with bone).

Supporting paragraphs: Nobel Biocare Zürich Airport
Answer: Zürich Airport