What is the relationship between 'Sky broadband' and 'Sky' in the context of the input sentence.
Options: operator, founded by, parent organization, chairperson

We're also reducing operating expenses while still maintaining good momentum in our key initiative, which is Sky Q, which is now in close to 50% of customers' homes or over 10 percentage points higher year-on-year, and the successful launch of Sky broadband in Italy, utilizing Comcast xFi technology.
parent organization