instruction:
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.
question:
When did sound become a regular part of the motion picture viewing experience?
answer:
When did sound become introduced as part of the motion picture viewing experience?


question:
When did the welfare system began in the us?
answer:
When did the first major federal welfare agency began in the us?


question:
Who is the wife of lakshmana in ramayana?
answer:

Who is the wife of lakshmana in ramayana, the Sanskrit epic?