(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.
In the context of the input sentence, determine the relationship between 'Berkshire Hathaway' and 'insurance'.
Options: director/manager, distribution format, developer, industry