Question: What airlines is a spin-off from a carrier that operates mainly from Sheremetyevo Internation Airport?
Sentence (from "Turkish Airlines"): Turkish Airlines (Turkish: "Türk Hava Yolları") () is the national flag carrier airline of Turkey, headquartered at the Turkish Airlines General Management Building on the grounds of Atatürk Airport in Yeşilköy, Bakırköy, Istanbul.
Relevant evidence: No