Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

[Q]: Context : The 29th Venice International Film Festival was held from 25 August to 7 September 1968. 
Answer : 1968
[A]: The date of 29th Venice International Film Festival was what?


[Q]: Context : George Armistead (April 10, 1780 -- April 25, 1818) was an American military officer who served as the commander of Fort McHenry during the Battle of Baltimore in the War of 1812. 
Answer : Battle of Baltimore
[A]: What war or battle involved George Armistead?


[Q]: Context : La donna del lago (The Lady of the Lake) is an opera composed by Gioachino Rossini with a libretto by Andrea Leone Tottola (whose verses are described as ``limpid'' by one critic) based on the French translation of The Lady of the Lake, a narrative poem written in 1810 by Sir Walter Scott, whose work continued to popularize the image of the romantic highlands. 
Answer : The Lady of the Lake
[A]:
The La donna del lago is based upon what?