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: Feb 15, 1564 saw the birth of what famed Italian physicist, mathematician, astronomer, and philosopher, who discovered the first 4 moons of Jupiter?
Example Output: astronomer

Example Input: To what political office was Dean Rusk appointed in 1961, as a result of which he played a leading role in the 'Cuban Missile Crisis' the following year?
Example Output:
dean rusk