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

Q: Context : William Brown Macdougall (16 December 1868 -- 20 April 1936) was a Scottish artist, wood engraver, etcher and book illustrator. 
Question : When did the life of William Brown Macdougall end?

A: 20 April 1936
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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?

A: Franco-Prussian War
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Q: Context : Mario Merz (1 January 1925 -- 9 November 2003) was an Italian artist, and husband of Marisa Merz. 
Question : What is Mario Merz's spouse's name?

A:
Marisa Merz
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