Utilize the input text as a context reference, choose the right relationship between Air Berlin and Etihad Airways 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.

And he said he could not envisage getting into the kind of partnership low-cost rival Air Berlin (Xetra: AB1000 - news ) has forged with Abu Dhabi-based Etihad Airways , which also now controls Alitalia.

Answer: parent_organization