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 CALENDAR 
Clue: It's the 5th month mentioned in the rhyme that begins, "Thirty days hath..."
[A]: february


[Q]: Category: THE EARLY 1900s 
Clue: These 2 nations fought a war on neither nation's soil; the decisive battle came at present-day Shen-Yang
[A]: russia & japan


[Q]: Category: LONDON LANDMARKS 
Clue: It was built originally on the Whitehall site of a medieval palace used to house visiting Scottish kings
[A]:
scotland yard