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

Context : Helen Pitts Douglass (1838 -- 1903) was an American suffragist and abolitionist, best known for being the second wife of Frederick Douglass. 
Question : What is Helen Pitts Douglass's spouse's name?
Frederick Douglass

Context : Nikolaus Gerhaert (c.1420 -- 11 June 1473), also known as Nikolaus Gerhaert van Leyden, was a sculptor of Dutch origin, although aside from his sculptures, few details are known of his life. 
Question : What date did Nikolaus Gerhaert die on?
1473

Context : Richard D. Creighton (1924-1988) was a United States Air Force flying ace during the Korean War, shooting down five enemy aircraft in the war. 
Question : What war was Richard D. Creighton in?

Korean War