What is the relationship between Citigroup and 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.

Morgan Stanley, Citigroup Inc. and Goldman Sachs Group Inc. aren’t issuing new shares of their ETNs, which count as short-term debt because holders can typically redeem them on about a week’s notice, according to “living wills” submitted to the Federal Deposit Insurance Corp. and the Federal Reserve last month, details of which were released Monday.
product_or_material_produced