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: When did the welfare system began in the us?
Example Output: When did the first major federal welfare agency began in the us?

Example Input: When was the last burning at the stake in england?
Example Output: When was the last burning alive at the stake in england?

Example Input: Who sang all aboard the choo choo train on disney?
Example Output:
What entertainment act sang all aboard the choo choo train on disney?