In the context of the input sentence, determine the relationship between 'Kraft Heinz' and 'Berkshire Hathaway'.
Options: chairperson, location of formation, parent organization, member of

Berkshire Hathaway Inc and Brazilian investment firm 3G Capital, which together bought Heinz in 2013, own 51 percent of Kraft Heinz and control six of its 11 board seats, including one for Berkshire chairman Warren Buffett.
parent organization