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

Example Input: Which composer's oratorios include 'The Kingdom' and 'The Dream of Gerontius'?
Example Output: the dream of gerontius

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: Sharing it with the surname of a well known football pundit, what is the SI unit of absorbed dose?
Example Output:
absorbed dose