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

Input: Consider Input: What's the name of Doctor Who's home planet ?

Output: doctor who

Input: Consider Input: Whitney Houston's husband Bobby Brown was originally a member of which successful band?

Output: bobby brown

Input: Consider Input: The D H Lawrence novel The Plumed Serpent is set in which country, bordered on the south-east by Guatemala, Belize and the Caribbean Sea?
Output: belize