instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In which city was Christopher Columbus born?
answer:
columbus

question:
Devil's Tower National Monument in Wyoming, USA features prominently in which landmark 1977 science fiction film?
answer:
devils tower

question:
Which film that won an Oscar for Best Picture, explores prejudice against Jews and Afro-Americans over the period 1948 to 1973?
answer:
academy award for best picture