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:
Whos next in line for the royal family?
answer:
Who is next in line in the British royal family?


question:
When did the astros last play in the world series?
answer:
When did the Astros play in the World Series for the first time?


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?