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

Example Input: Laurence Olivier directed and starred in a 1944 film, which began in the Globe Theatre and then gradually shifted to a realistic evocation of the Battle of Agincourt, which was adapted from which one of Shakespeare's plays?
Example Output: battle of agincourt

Example Input: Which American actor and singer has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?
Example Output: britain's got talent

Example Input: Which author created the fictional character Allan Quartermain ?
Example Output:
allan quatermain