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

Ex Input:
Lopburi, Phichit and Ang Thong are provinces in which Asian country?

Ex Output:
phichit


Ex Input:
The film The Curious Case of Benjamin Button, starring Brad Pitt, is based on a short story by whom?

Ex Output:
the curious case of benjamin button


Ex Input:
Brideshead Revisited, written in 1945, was a famous novel by which famous author?

Ex Output:

brideshead revisited