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

Example Input: Name the actress, she died in August 2002, who played the part of 'Madame Edith Artois' in the TV series 'Allo, Allo'?
Example Output: edith artois

Example Input: Which film director won the Oscar for Best Picture for the film 12 Years a Slave in 2013?
Example Output: 12 years a slave

Example Input: Alexander Graham Bell discovered that which type of cabling cancels out electrical interference?
Example Output:
alexander graham bell