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.

[Q]: When did the first usb flash drive appear on the retail market?
[A]: When did the first usb flash drive appear on the global retail market?


[Q]: Who appointed the comptroller and auditor general of india?
[A]: What officeholder appoints the Comptroller and Auditor General of India?


[Q]: Who is the headmaster of hogwarts after dumbledore died?
[A]:
Who was the acting headmaster of hogwarts after dumbledore died?