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

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

Output: angel


Input: Consider Input: Who is the only British Prime Minister to serve under 3 monarchs?

Output: prime minister of the united kingdom


Input: Consider Input: Which US soft drink was invented by Caleb Brabham, and was originally sold under the name of 'Brad's Drink'?


Output: brad's drink