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

Input: Consider Input: The headquarters building of which government agency is known as 'The Doughnut' due to its shape?

Output: the doughnut

Input: Consider Input: Eden Park staged some of the 2011 Rugby World Cup matches, in which city can it be found?

Output: eden park

Input: Consider Input: Which Frenchman won the Alpine triple-crown at the 1968 Winter Olympics?
Output: 1968 winter olympics