Premise: Robert Siers `` Rob '' Cavallo ( born March 21 , 1963 ) is an American record producer , musician , and the CEO of Warner Bros. . Primarily known for his production work with Green Day , he has also worked with Linkin Park , My Chemical Romance , Eric Clapton , the Goo Goo Dolls , the Dave Matthews Band , Kid Rock , Alanis Morissette , Black Sabbath , Phil Collins , Paramore and Meat Loaf .
Hypothesis: Rob Cavallo has worked with the president.
Label: NEUTRAL