TASK DEFINITION: In this task, you're given an ambiguous question (which can be answered in more than one way). Your task is to write a question that clarifies the given question in such a way that the generated question has one unique answer.
PROBLEM: What was the name of the book darwin published?

SOLUTION: What book did Darwin publish in 1859?

PROBLEM: Who is the captain of hockey in india?

SOLUTION: Who is the captain of India's hockey team as of 2017?

PROBLEM: Where does russia rank in the world economy?

SOLUTION:
Where does Russia rank in the world economy according to IMF?