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

Berkshire Hathaway (NYSE: BRK.A) 's Warren Buffett said Tuesday the U.S. economy is growing at about 2 percent, and he's planning to invest $32 billion in the next four to five months.
chief executive officer