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

Input: Consider Input: Name Shakespeare play Ariel, Miranda and Prospero appear?

Output: ariel

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

Output: africa

Input: Consider Input: David Clayton Thomas was the lead singer with which 1960's formed rock band?
Output: david clayton-thomas