Question: What airlines is a spin-off from a carrier that operates mainly from Sheremetyevo Internation Airport?
Sentence (from "Air Wisconsin"): The company has announced it will once again partner with United Airlines as a United Express code sharing air carrier with primary hubs to be located at Chicago O'Hare International Airport (ORD) and Washington Dulles International Airport (IAD) beginning in September 2017 and will be "exclusively operating" as United Express by March 2018.
Relevant evidence: No