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

Example Input: Which future Nobel Prize winner did Bill Clinton choose as his Vice President?
Example Output: vice president of the united states

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

Example Input: Which boxer was nicknamed the Orchid Man?
Example Output:
boxing