Refer to the input text as context and select the correct relationship between 'Atlas Air' and 'Polar Air Cargo' from the available options.
Options: industry, developer, manufacturer, subsidiary

AIR NZ, Air China and Air China Cargo, Air India, and Polar Air Cargo and its parent Atlas Air Worldwide, failed in an application to end the claim on Monday after a hearing in the US District Court for the Eastern District of New York.
subsidiary