Question: Hartmut Mehdorn, is a German manager and mechanical engineer, he served as CEO of Germany's second largest airline, and Europe's seventh-largest airline in terms of passengers carried, until he stepped down in January 2013?
Sentence (from "Air Berlin"): It maintains hubs at Berlin Tegel Airport and Düsseldorf Airport and serves 12 German cities as well as destinations in Europe, the Caribbean and the Americas.
Relevant evidence: No