Utilize the input text as a context reference, choose the right relationship between Lufthansa and SunExpress from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

Lufthansa said in March it would use SunExpress pilots on new long-haul operations under its expanding Eurowings discount brand.

Answer: subsidiary