Utilize the input text as a context reference, choose the right relationship between MetLife and Insurance 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.

The Boston financial-services company said Thursday it has begun offering “qualified longevity annuity contracts” from three companies—Principal Financial Group, Guardian Life Insurance Co. and MetLife Inc.—to its IRA investors.

Answer: product_or_material_produced