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

Ex Input:
James Dearden wrote which book, made into a famous film directed by Adrian Lyne, in 1987?

Ex Output:
adrian lyne


Ex Input:
Brasilia is the capital but which city in Brazil has the largest population?

Ex Output:
brazil


Ex Input:
Which actress caused a sensation by appearing naked in the 1933 film Ecstasy?

Ex Output:

ecstasy