Take context from the input text and decide on the accurate relationship between 'Warren Buffett' and 'Berkshire Hathaway' from the options provided.
Options: owner of, headquarters location, product/material produced, director/manager

Home / Nation & World / Berkshire buying Precision Castparts for $32B Berkshire Hathaway Chairman and CEO Warren Buffett speaks May 5, 2014, during an interview with Liz Claman on the Fox Business Network in Omaha, Nebraska.
owner of