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.
Take context from the input text and decide on the accurate relationship between 'Berkshire Hathaway' and 'insurance' from the options provided.
Options: director/manager, product/material produced, industry, subsidiary