Given the question: Information: - Nepal Airlines Corporation is the flag carrier airline of Nepal. Its head office is in the Nepal Airlines Corporation (NAC) Building in Kathmandu, and its main base is Tribhuvan International Airport, Kathmandu. The airline was established in July 1958 as Royal Nepal Airlines Corporation (RNAC) to be Nepal's first airline. The airline's first aircraft was a Douglas DC-3, used to serve domestic routes and a handful of destinations in India. The airline acquired its first jet aircraft, Boeing 727s, in 1972. As of April 2016, the airline operates a fleet of nine aircraft. - The Boeing 727 is a midsized, narrow-body three-engined jet aircraft built by Boeing Commercial Airplanes from the early 1960s to 1984. It can carry 149 to 189 passengers and later models can fly up to nonstop. Intended for short and medium-length flights, the 727 can use relatively short runways at smaller airports. It has three Pratt & Whitney JT8D engines below the T-tail, one on each side of the rear fuselage with a center engine that connects through an S-duct to an inlet at the base of the fin. The 727 is Boeing's only trijet aircraft. - Kathmandu (Nepali pronunciation: ) is the capital city of the Federal Democratic Republic of Nepal, the largest Himalayan state in Asia. It is the largest metropolis in Nepal, with a population of 1.4 million in the city proper, and 5 million in its urban agglomeration across the Kathmandu Valley, which includes the towns of Lalitpur, Kirtipur, Madhyapur Thimi and Bhaktapur. Kathmandu is also the largest metropolis in the Himalayan hill region. - A flag carrier is a transportation company, such as an airline or shipping company, that, being locally registered in a given state, enjoys preferential rights or privileges accorded by the government for international operations. The term also refers to any carrier that is or was owned by a government, even long after their privatization when preferential rights or privileges continue. - Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked central Himalayan country in South Asia. It has a population of 26.4 million and is the 93rd largest country by area. Bordering China in the north and India in the south, east, and west, it is the largest sovereign Himalayan state. Nepal does not border Bangladesh, which is located within only 27 km (17 mi) of its southeastern tip. It neither borders Bhutan due to the Indian state of Sikkim being located in between. Nepal has a diverse geography, including fertile plains, subalpine forested hills, and eight of the world's ten tallest mountains, including Mount Everest, the highest point on Earth. Kathmandu is the nation's capital and largest city. It is a multiethnic nation with Nepali as the official language. - Tribhuvan International Airport is an international airport in Kathmandu, Nepal. The airport is about six kilometres from the city centre, in the Kathmandu valley. It is the sole international airport in Nepal, though Nijgadh International Airport has been proposed as a second. The airport has served as an airfield since 1949, and was inaugurated in 1955 by King Mahendra. It received its current name in 1964. Originally a grass runway, it was re-laid in concrete in 1957 and has been extended several times. The first jet aircraft landed at Tribhuvan in 1967 and regular jet operations commenced in 1972. - The Douglas DC-3 is a fixed-wing propeller-driven airliner. Its cruise speed and range revolutionized air transport in the 1930s and 1940s. Its lasting effect on the airline industry and World War II makes it one of the most significant transport aircraft ever made. - India, officially the Republic of India ("Bhrat Gaarjya"), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country (with over 1.2 billion people), and the most populous democracy in the world. It is bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast. It shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the northeast; and Myanmar (Burma) and Bangladesh to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives. India's Andaman and Nicobar Islands share a maritime border with Thailand and Indonesia. Its capital is New Delhi; other metropolises include Mumbai, Kolkata, Chennai, Bangalore, Hyderabad and Ahmedabad. - Nepal Airlines offers scheduled flights to the following destinations as of January 2016 . After reading the paragraphs above, choose the best answer for the entity that related to 'nepal airlines destinations' with the relationship of 'is a list of'. Choices: - aircraft - airline - airport - building - capital - city - company - country - flag - hill - people - population - state - term - war
The answer is:
airport