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

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

Output: the dark tower


Input: Consider Input: In which city will the 2014 Tour de France begin?

Output: 2014 tour de france


Input: Consider Input: Fictional characters Clark Kent, Lois Lane and Jimmy Olsen work for which newspaper?


Output: jimmy olsen