TASK DEFINITION: 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).
PROBLEM: concept: Olympic Games  answers:  ['Once every two years']

SOLUTION: when are the summer olympics held?

PROBLEM: concept: Isaac Newton  answers:  ['Physicist']

SOLUTION: what is isaac newton famous for?

PROBLEM: concept: Sergio Aguero  answers:  ['Argentina national football team']

SOLUTION:
what team does sergio aguero play for?