Utilize the input text as a context reference, choose the right relationship between 'Airbus Group' and 'Airbus' from the options.
Options: legal form, headquarters location, subsidiary, position held

Industry sources have said Airbus Group is exploring increasing its stake in tandem with BAE Systems as part of a wider move that could see Airbus cede its 50 percent share of turboprop maker ATR to its joint-venture partner Finmeccanica.
subsidiary