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 came up with the saying the customer is always right?
answer:
Who from London came up with the saying the customer is always right?


question:
Who wrote the girl who played with fire?
answer:
Who wrote the book, The Girl who played with fire?


question:
Who played lina in singing in the rain?
answer:

Who played Lina in the 2000 London revival production of Singing in the Rain?