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: Russia  answers:  ['Ukraine', 'Belarus', 'Kazakhstan', 'Poland', 'Lithuania', 'Azerbaijan', 'Mongolia', 'North Korea', 'Georgia', 'Norway']

SOLUTION: which countries does russia border?

PROBLEM: concept: Lena River  answers:  ['Baikal Mountains']

SOLUTION: where does lena river begin and end?

PROBLEM: concept: Trey Songz  answers:  ['Petersburg High School']

SOLUTION:
where did trey songz go to high school?

