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

Ex Input:
Which composer's oratorios include 'The Kingdom' and 'The Dream of Gerontius'?

Ex Output:
the dream of gerontius


Ex Input:
Which chemical element is named after the Latin for Copenhagen where it was discovered?

Ex Output:
copenhagen


Ex Input:
What was Christopher Reeve's first movie?

Ex Output:

christopher reeve