What is the relationship between 'Sky Deutschland' and 'Sky' in the context of the input sentence.
Options: brand, chairperson, subsidiary, owned by

On November 12, 2014, Twenty-First Century Fox completed the sale of Sky Italia and its 57% interest in Sky Deutschland to British Sky Broadcasting Group plc, which was subsequently renamed Sky plc ("Sky") (See Note 3 - Acquisitions, Disposals and Other Transactions to the accompanying Consolidated Financial Statements of Twenty-First Century Fox).
owned by