Utilize the input text as a context reference, choose the right relationship between Vodafone and Verizon 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.
Text: Vodafone returned a big chunk of the windfall to shareholders, and is currently busy investing heavily to replace the substantial contribution to earnings and cash flow that Verizon had been making.
user
subsidiary
assistant