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 motown the musical open on broadway?
answer:
When did motown the musical start previews on broadway?


question:
Who has the authority to make laws for the united states?
answer:
Who has the authority to make laws for the united states through Acts of Congress?


question:
Who was the roman emperor when jerusalem was destroyed?
answer:

Who was the future roman emperor in charge of the army when jerusalem was destroyed?