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

Example Input: In which British city would you find Barlinnie prison?
Example Output: hm prison barlinnie

Example Input: In which range of mountains are the two highest peaks Aconcagua and Ojos Del Salado?
Example Output: aconcagua

Example Input: Ann Rules book The Stranger Beside Me, is about what serial killer, assumed to have murdered 35 people, before hitting the electric chair in Starke, Florida on January 24, 1989?
Example Output:
the stranger beside me