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

Input: Consider Input: On which date do we celebrate 'Boxing Day'?

Output: boxing day

Input: Consider Input: Which of these was the title of Bobby Darin's first million selling single?

Output: bobby darin

Input: Consider Input: In June 1938, Action Comics #1 was published, featuring which comic book hero for the first time?
Output: action comics