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

Input: Consider Input: Who directed the film Black Swan (in ballet)?

Output: black swan


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

Output: bobby darin


Input: Consider Input: Who voiced the character of Bruce the shark in Finding Nemo?


Output: bruce