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

Example Input: Released last month, People, Hell and Angels is a posthumous album made up of songs recorded by which artist in 1969 ?
Example Output: angel

Example Input: What country has an official residence called Blair House, kept for guests of the leader of the country?
Example Output: blair

Example Input: What is the largest land-locked country in Africa?
Example Output:
africa