instruction:
You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
question:
Category: BEFORE & AFTER 
Clue: John Donne poem that's "rolling, rolling, rolling on the river"
answer:
"death be not proud mary"


question:
Category: THE 19th CENTURY 
Clue: 1853 purchase that brought the contiguous U.S. about up to its present area
answer:
the gadsden purchase


question:
Category: BOOK PARTS 
Clue: From Latin for "leaf", it's a sheet of paper folded over to make 4 pages of a book, or it's each page number
answer:

folio