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).
--------
Question: concept: Audrey Hepburn  answers:  ['Appendix cancer']

Answer: what cancer did audrey hepburn died of?


Question: concept: London  answers:  ['Trafalgar Square']

Answer: what is the center of london called?


Question: concept: Henry David Thoreau  answers:  ['Tuberculosis']

Answer:
what did thoreau die from?