Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Q: Context : The South Eastern and Chatham Railway (SECR) H Class is a class of 0-4-4T steam locomotive originally designed for suburban passenger work, designed by Harry Wainwright in 1904.
Answer : 1904

A: What year was South Eastern and Chatham Railway commissioned?
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Q: Context : NGC 6872, also known as the Condor Galaxy, is a large barred spiral galaxy of type SB(s)b pec in the constellation Pavo.
Answer : Pavo

A: What is the constellation that is made with NGC 6872?
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Q: Context : Portrait of Catherine, Duchess of Cambridge is the first official portrait of Catherine, Duchess of Cambridge, unveiled at the National Portrait Gallery, London on 11 January 2013.
Answer : National Portrait Gallery

A:
What is the name of the place where Portrait of Catherine, Duchess of Cambridge can be found?
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