Utilize the input text as a context reference, choose the right relationship between Comcast and Brian Roberts from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

These include Walt Disney Co, which paid CEO Robert Iger $34.3 million for the fiscal year ended September 28, 2013, and Comcast Corp, where CEO Brian Roberts got $31.4 million in 2013.

Answer: chief_executive_officer