(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.
Take context from the input text and decide on the accurate relationship between 'Berkshire Hathaway' and 'insurance' from the options provided.
Options: industry, director/manager, distribution format, developer