Refer to the input text as context and select the correct relationship between 'Berkshire Hathaway' and 'Warren Buffett' from the available options.
Options: parent organization, developer, chairperson, member of

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