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

Input: Consider Input: What is the name of the main thoroughfare in Barcelona, which runs from the Placa de Catalunya to the sea?

Output: barcelona


Input: Consider Input: Between 1958 and 1972 all Cliff Richard single records were released on which record label?

Output: cliff richard


Input: Consider Input: Which film director's credits include Memento, Insomnia, Inception and The Dark Knight Rises?


Output: the dark knight rises