I want to know the answer to the following question:
Which season eight contestant was a guest judge in season fourteen?
All the background I'm provided with is that "In season two, guest judges such as Lionel Richie and Robin Gibb were used, and in season three Donna Summer, Quentin Tarantino and some of the mentors also joined as judges to critique the performances in the final rounds.". Is that enough to answer the question?
Answer: no