Utilize the input text as a context reference, choose the right relationship between Apple Inc and Tim Cook 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.

SAN FRANCISCO (Reuters) - Apple Inc (AAPL.O) Chief Executive Tim Cook unveiled a new version of its Apple TV product with an app store and a voice-controlled remote control, part of a trio of announcements aimed at revamping its product line.

Answer: chief_executive_officer