Aug 7 (Reuters) - Warren Buffett's Berkshire Hathaway Inc said on Friday second-quarter profit fell 37 percent, reflecting a significant decline in investment gains and weaker results in its insurance operations.
Utilize the input text as a context reference, choose the right relationship between 'Berkshire Hathaway' and 'insurance' from the options.
Options: subsidiary, director/manager, industry, product/material produced