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 country are the Angel Falls, or Kerepakupai Ven?
Example Output: angel falls

Example Input: Who is the only British Prime Minister to serve under 3 monarchs?
Example Output: prime minister of the united kingdom

Example Input: Who fronted the BBC 2 specials Gambling in Las Vegas, The Most Hated Family in America, Under The Knife, Behind Bars, African Hunting Holiday, Law and Disorder in Philadelphia and A Place for Paedophiles?
Example Output:
a place for paedophiles