What is the relationship between 'Warren Buffett' and 'Berkshire Hathaway' in the context of the input sentence.
Options: headquarters location, owner of, member of, subsidiary

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.
owner of