Utilize the input text as a context reference, choose the right relationship between MillerCoors and SABMiller 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.

Within the last month alone, the SABMiller and MolsonCoors joint venture MillerCoors bought two-year-old San Diego brewery Saint Archer.

Answer: parent_organization