In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.

Q: what is the microscopic unit of the kidney

A: The nephron
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Q: who plays sister bernadette on call the midwife

A: Laura Main
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Q: when did the first harry potter book get released

A:
26 June 1997
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