Generate a correct and concise answer for the question based on the words in the context.
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Question: Context : Sigmund Selberg (11 August 1910 -- 20 April 1994) was a Norwegian mathematician.
Question : What was Sigmund Selberg's occupation?

Answer: mathematician

Question: Context : Virgin and Child with Four Angels has been housed in the Metropolitan Museum of Art, New York since its donation from a private collection in 1977.
Question : What is the name of the place where Virgin and Child with Four Angels can be found?

Answer: Metropolitan Museum of Art

Question: Context : Dietrich von Muller (16 September 1891 -- 3 January 1961) was a German Officer during both World War I and World War II. Just before the end of World War II he was promoted to Generalleutnant and awarded the Knight's Cross of the Iron Cross with Oak Leaves and Swords.
Question : In which war did Dietrich von Muller fight?

Answer:
World War I