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.

Example input: Lucifer how many episodes are in season 3?
Example output: How many episodes of season 3 of Lucifer were there, including bonus episodes?
Example explanation: The generated question clarifies the input question by asking about bonus episodes because if the question is about regular episodes only then the answer will be different than including the bonus episodes.
Q: When did the concept of sustainable development come into existence?
A:
When is it widely accepted that the modern concept of sustainable development came into existence?