TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who has taken over the TV role of Doctor Who, from actor David Tennant?

SOLUTION: doctor who

PROBLEM: According to the bible, Zaccariah was the father of which New Testament figure?

SOLUTION: bible

PROBLEM: As portrayed by Carl Weathers, and known as The Master of Disaster, The King of Sting, The Dancing Destroyer, or The Count of Monte Fisto, what was the name of the opponent Rocky faced for the Word Championship title in the first Rocky movie?

SOLUTION:
rocky