Utilize the input text as a context reference, choose the right relationship between Xandr and WarnerMedia 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.

Bringing Xandr and WarnerMedia or Turner's advertising just makes sense in this environment where you're focused on acting efficiently and acting as one, it's really important.

Answer: owned_by