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

Input: Consider Input: Which country mainly makes up the Horn of Africa?

Output: africa


Input: Consider Input: What is the main river of Brazil?

Output: brazil


Input: Consider Input: The 1957 film 'The Curse of Frankenstein' was based on a novel by which author?


Output: frankenstein