TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which cyclist won the first medal for Team GB at the 2012 Olympic Games?

SOLUTION: gb

PROBLEM: Which alliteratively-named politician served as Abraham Lincoln's Vice-President between 1861 and 1865?

SOLUTION: abraham lincoln

PROBLEM: Which 1987 black comedy starred Danny de Vito and Billy Crystal with an appearance by Oprah Winfrey as 'herself'?

SOLUTION:
billy crystal