original question: What mountain is next to the airport that serves as a hub for [Alitalia]?
answer: mount etna
answer type: Mountain.
auxiliary information: Alitalia ‚Äì Societ√† Aerea Italiana, operating as Alitalia, is the flag carrier and national airline of Italy. The company has its head office in Fiumicino, Rome, Italy. Its main hub is Leonardo da Vinci-Fiumicino Airport, in Rome and two secondary hubs are located in Milan Linate Airport and Milan Malpensa Airport, both in Milan. Other focus airports are Turin Airport and Venice Marco Polo Airport. On 30 September 2014, Air One ceased flight operations and Alitalia inherited some of its focus cities such as Catania-Fontanarossa Airport and Pisa International Airport. Alitalia's subsidiary Alitalia CityLiner's bases are Naples International Airport and Trieste Airport instead of Rome-Fiumicino and Milan-Linate airports. In 2014, it was the eleventh-largest airline in Europe. The name "Alitalia" is an Italian portmanteau of the words ali, and Italia. In late 2013, facing bankruptcy, the loss of a major fuel supplier, and a possible grounding by Italy's civil aviation authority, the airline announced a ‚Ç¨500 million rescue package which includes a ‚Ç¨75 million investment by the Italian state-owned postal operator.
Name the mountain that's next to the airport that serves as a hub for [Alitalia].