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

Ex Input:
In which constellation is the star Deneb?

Ex Output:
deneb


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

Ex Output:
doctor who


Ex Input:
Complete the name of the US baseball team the Atlanta _______.?

Ex Output:

atlanta