I want to know the answer to the following question:
Who was a mentor but later turned down the opportunity to judge Idol?
All the background I'm provided with is that "Elton John, who had appeared as a mentor in the show but turned down an offer to be a judge on American Idol, commenting on talent shows in general, said that "there have been some good acts but the only way to sustain a career is to pay your dues in small clubs".". Is that enough to answer the question?
Answer: yes