Utilize the input text as a context reference, choose the right relationship between Berkshire Hathaway and Insurance from the options. Options: 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.

Warren Buffett's Berkshire Hathaway Specialty Insurance is shaking up the commercial insurance market after opening a Sydney office in April.

Answer: industry