Final answer:
Mrs. Nakamura's sister brought her the news of the atomic bombing of Hiroshima.
Step-by-step explanation:
In the book 'Hiroshima' by John Hersey, Mrs. Nakamura's sister brought her the news that the city of Hiroshima had been bombed by an atomic bomb.
The news was devastating and Mrs. Nakamura was deeply affected by the loss and destruction caused by the bombing.
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