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.
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Question: Category: A WORLD OF OPERA 
Clue: "Hunyadi Laszlo" is one of this country's best-loved operas

Answer: hungary


Question: Category: CUBA, SI! 
Clue: Turquino Peak, Cuba's highest, is in the chain known as this "Maestra"; California has one "Nevada"

Answer: sierra


Question: Category: ORIGINAL TITLES 
Clue: Hitler originally titled it "Four and a Half Years of Struggle Against Lies, Stupidity and Cowardice"

Answer:
mein kampf