Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Input: Consider Input: Ride of the Valkyries is the official quick march of which branch of the British Army?

Output: british army


Input: Consider Input: Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?

Output: and quiet flows the don


Input: Consider Input: Which song from the 1934 film 'The Gay Divorcee', starring Fred Astaire and Ginger Rogers, won the first Academy Award for Best Original Song?


Output: academy award for best original song