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.

[Q]: Category: THE WINTER PALACE 
Clue: In 1881 the "Czar Liberator", the II czar of this name, asked to be taken to the palace to die after being fatally wounded
[A]: alexander ii


[Q]: Category: AMERICAN LITERATURE 
Clue: "Little Women" is set during this war
[A]: the civil war


[Q]: Category: SCIENCE 
Clue: This inert gas alters your voice because sound travels more than twice as fast in it as in air
[A]:
helium