Given the task definition and input, reply with output. You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

Category: RINGING THE OPENING BELL AT THE NYSE
Clue: On Oct. 11, 2007 this chairman of the Virgin Group rang us up, but he didn't parachute in while on fire or anything
branson