What is the relationship between Cigna and Health insurance in the context of the input sentence. Choose an answer from: 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.

Health insurance is Cigna Corp.'s main business, but it also sells group disability and life coverage in the U.S., and it has a growing international segment that Anthem lacks.
product_or_material_produced