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

Ex Input:
In which classic T.V. crime series did Captain Frank Furillo appear ?

Ex Output:
frank furillo


Ex Input:
Everything Changes, Beautiful World and Circus are all albums released by which British band?

Ex Output:
beautiful world


Ex Input:
In the British Army, which of these ranks is the highest Major, Captain or Colonel?

Ex Output:

british army