TASK DEFINITION: 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.
PROBLEM: The portion of the uterine endometrium that is shed every month is the?

SOLUTION: What is the name of the portion of the uterine endometrium that is shed every month?

PROBLEM: Who created the first monotheism known in history?

SOLUTION: Who created the first quasi-monotheism in history?

PROBLEM: When did the first usb flash drive appear on the retail market?

SOLUTION:
When did the first usb flash drive appear on the global retail market?