Utilize the input text as a context reference, choose the right relationship between Ralcorp and private label 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.

At the time of the purchase, ConAgra said that the Ralcorp acquisition would provide the company with a larger presence in the growing private label food segment.

Answer: product_or_material_produced