Question: Which airline that has Chelyabinsk Airport as a secondary hub is based in Yekaterinburg, Russia?
Sentence (from "Ural Airlines"): Ural Airlines (Russian: Ура́льские авиали́нии , "Ural’skiye avialinii") is an airline based in Yekaterinburg, Russia, operates scheduled and chartered domestic and international flights out of Koltsovo International Airport.
Relevant evidence: Yes