They're all out of broadband in Italy, benefiting from the xFi product ecosystem from Comcast will provide a strong stand-alone profit opportunity as well as leveraging our ability to cross-sell and bundle all of our TV services more effectively in this market, of course, underpinned by the trusted Sky brand.
What is the relationship between 'Comcast' and 'Sky' in the context of the input sentence.
Options: subsidiary, location of formation, developer, publisher