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.

Category: ADMIRALS 
Clue: Opposed to war with the U.S., he nevertheless planned the Japanese attack on Pearl Harbor
isoroku yamamoto

Category: POLAND 
Clue: After WWII, over 80% of the buildings in this capital were uninhabitable
warsaw

Category: LITERATURE FOR KIDS 
Clue: In "Little Women", Margaret March is better known by this nickname

"meg"