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

Ex Input:
What is the name of the astromech droid companion of Anakin Skywalker, Luke Skywalker and Obi-Wan Kenobi in the Star Wars franchise?

Ex Output:
droid


Ex Input:
Which exponent of Brit Art created works involving a bed, a tent and a beach hut?

Ex Output:
young british artists


Ex Input:
Adolphe Thiers became Prime Minister of which European country in 1836?

Ex Output:

adolphe thiers