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

Example Input: Brasilia is the capital but which city in Brazil has the largest population?
Example Output: brazil

Example Input: Which King was born at Dunfermline Palace in November 1600?
Example Output: dunfermline palace

Example Input: Betty Driver played which role in Coronation Street?
Example Output:
betty driver