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: In which film did Sharon Stone play the character 'Catherine Tramell?

Output: catherine tramell

Input: Consider Input: Anne Aston was a dizzy blonde hostess of which 1960s TV game show?
Output: anne aston