In the context of the input sentence, determine the relationship between 'Rupert Murdoch' and '21st Century Fox'.
Options: position held, manufacturer, owner of, currency

Media company 21st Century Fox reported Tuesday that the total compensation for Executive Co-Chairman Rupert Murdoch and Chief Executive James Murdoch declined in the fiscal year ended in June, because of a decline in stock awards and non-equity incentive compensation.
owner of