What is the relationship between METLIFE and Insurance industry 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.

Compared to other companies in the Insurance industry and the overall market on the basis of return on equity, METLIFE INC has outperformed in comparison with the industry average, but has underperformed when compared to that of the S&P 500.

Answer: industry