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

Example Input: Who has written a series of novels, entitled The Dark Tower, of which the first, in 1982, was entitled, The Gunslinger?
Example Output: the dark tower

Example Input: Which jockey won the 1981 UK Grand National on Aldaniti?
Example Output: aldaniti

Example Input: The character of Adam the servant was said to have been played by Shakespeare in which of his plays?
Example Output:
adam