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

Facebook Inc Recruits More Publishers for Instant Articles, Google and Twitter Fight Back Facebook is expanding Instant Articles to more users and more publishers.

Answer: operator