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: Ivan Pavlov answers: ['Classical conditioning']
what did ivan pavlov invented?

concept: United States answers: ['Unitarian Universalism', 'Judaism', 'Christianity', 'Atheism', 'Buddhism', 'Hinduism', 'Islam']
what are the most common religions in the united states?

concept: Oscar Pistorius answers: ['2012 Summer Olympics']
when will oscar pistorius compete?