instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which actress played the part of Angie in EastEnders?
answer:
angie watts

question:
Who directed the film 'Back To The Future'?
answer:
back to the future

question:
In Kill Bill, who played the character of Black Mamba?
answer:
black mamba