-- U.S. company Berkshire Hathaway (Sao Paolo: BERK34.SA - news ) to acquire U.S. personal care and cosmetics company Procter & Gamble's Duracell battery unit (approved July 23)
In the context of the input sentence, determine the relationship between 'Duracell' and 'Berkshire Hathaway'.
Options: currency, owned by, owner of, industry