Utilize the input text as a context reference, choose the right relationship between Duracell and Berkshire Hathaway 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.

Those workers, mostly based at Duracell headquarters in Bethel, Conn., and offices in Geneva, Switzerland and Panama, are expected to transfer to Berkshire Hathaway .

Answer: parent_organization