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.

Insurance Australia Group has formed a strategic relationship with Warren Buffett's investment giant Berkshire Hathaway that will see the US group take a 3.7 per cent stake in IAG via a $500 million placement.

Answer: industry