What is the relationship between 'Smirnoff' and 'Diageo' in the context of the input sentence.
Options: business division, member of, owned by, chairperson

The Smirnoff vodka maker will buy out the Dutch brewer’s stake in Brandhouse, a sales and marketing entity, while Heineken will focus on beer, ending a joint venture with Diageo that began in 2004 to sell spirits, beer and cider in Africa.
owned by