What is the relationship between Berkshire Hathaway 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.

(Reuters) - Warren Buffett's Berkshire Hathaway Inc (BRKa.N) (BRKb.N) said on Friday its second-quarter profit fell 37 percent, reflecting a significant decline in investment gains and an underwriting loss from insurance operations, which include Geico.

Answer: industry