Generate a correct and concise answer for the question based on the words in the context.

[EX Q]: Context : Karl Gustav von Sandrart (1817-1898) was a Prussian general in the Franco-Prussian War of 1870. 
Question : In what war did Karl Gustav von Sandrart fight?
[EX A]: Franco-Prussian War

[EX Q]: Context : The Madonna and Child with St John and Angels (c. 1497), also known as The Manchester Madonna, is an unfinished painting attributed to Michelangelo in the National Gallery, London. 
Question : What is the name of the place where Manchester Madonna can be found?
[EX A]: National Gallery

[EX Q]: Context : Sir (Richard) Walter Essex (13 January 1857 -- 15 September 1941) was a British businessman and Liberal Party politician. 
Question : What was Walter Essex's occupation?
[EX A]:
politician