Question: Who has won a grammy emmy oscar and tony?
Answer: fifteen people
Natural Questions answer: Marvin Hamlisch
Whoopi Goldberg
Scott Rudin
Mike Nichols
Rita Moreno
Jonathan Tunick
Robert Lopez
Helen Hayes
Audrey Hepburn
Richard Rodgers
Mel Brooks
John Gielgud (from the Wikipedia article "List of people who have won Academy, Emmy, Grammy, and Tony Awards")