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:
What is the largest coin in the us?
answer:
What is the largest coin ever minted in the us?


question:
Who won the best picture in the oscars?
answer:
Which film won the best picture in the 90th oscars?


question:
Who created the quote keep calm and carry on?
answer:

Which government created the quote keep calm and carry on?