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

Input: Consider Input: Harry, Tom, Dougie and Danny are collectively known as who in the pop world?

Output: dougie poynter


Input: Consider Input: Who has taken over the TV role of Doctor Who, from actor David Tennant?

Output: doctor who


Input: Consider Input: As whom were John Belushi and Dan Ackroyd known in the title of a 1980 film?


Output: dan aykroyd