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:
Who does the voice of cortana in halo?
answer:
Who acts and does the voice of cortana in the 2021 halo tv series?


question:
Who won the new york times vs. united states case?
answer:
Which company won the new york times vs. united states case?


question:
When was st paul's cathedral melbourne built?
answer:

When was the foundation stone for st paul's cathedral melbourne laid?