Utilize the input text as a context reference, choose the right relationship between Upjohn and company 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.

Following the expected separation of Upjohn in the fourth quarter of this year, Pfizer will be a more focused, science-driven company that is even better positioned to deliver our innovative medicines and vaccines to patients around the world.

Answer: legal_form