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: Charles Darwin  answers:  ['On evolution']
what book did charles darwin write on evolution?

concept: Madeira  answers:  ['Atlantic Ocean', 'Azores Canaries Madeira', 'Madeira Islands archipelago', 'Portugal']
where is madeira?

concept: John Madden  answers:  ['Philadelphia Eagles', 'Oregon Ducks football', 'Cal Poly Mustangs football']

what team did john madden play football for?