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 : 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?