In the context of the input sentence, determine the relationship between 'Berkshire Hathaway' and 'Warren Buffett'.
Options: industry, creator, chief executive officer, original broadcaster

NEW YORK (Reuters) - Billionaire investing icon Warren Buffett said on Tuesday there are dozens of countries in which his sprawling Berkshire Hathaway Inc (BRKa.N) conglomerate would be interested in buying new businesses.
chief executive officer