You are given a concept, and a list of answers. You should generate a question about the concept that leads to the given answer(s).

concept: American Idol  answers:  ['Carrie Underwood', 'Lee DeWyze', 'David Cook', 'Phillip Phillips', 'Kelly Clarkson', 'Ruben Studdard', 'Kris Allen', 'Taylor Hicks', 'Jordin Sparks', 'Fantasia']
who are all the american idol winners and runner ups?