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

Example Input: The novels 'The Shipmaster, 'The Iron Ships' and 'The Trade Winds' by Cyril Abraham, are based on which 1970's British tv series?
Example Output: cyril abraham

Example Input: In 1864, the Dale Dyke Dam burst while being filled, leading to the death of 240 people in which British city?
Example Output: dale dike reservoir

Example Input: What is the capitol of Belarus?
Example Output:
belarus