Question: Tyrolean Airways was owned by an airline group that was one of the five founding members of an airline alliance formed in what year?
Sentence (from "Lufthansa"): Deutsche Lufthansa AG () (] ), commonly known as Lufthansa (sometimes also as "Lufthansa German Airlines"), is the largest German airline and, when combined with its subsidiaries, also the largest airline in Europe, in terms of fleet size, and the second largest airline in terms of passengers carried during 2016.
Relevant evidence: No