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).

[Q]: concept: Zambezi  answers:  ['Namibia']
[A]: what does the zambezi river flow into?


[Q]: concept: Helen Keller  answers:  ['Deafness', 'Vision loss']
[A]: what challenges did helen keller have to face?


[Q]: concept: James Chadwick  answers:  ['Neutron']
[A]:
what did chadwick identify?