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

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

Example Input: And Another Thing... by Eoin Colfer, published in 2009, eight years after the death of the author of the first five, is described as the sixth in which trilogy of books?
Example Output: and another thing...

Example Input: Where is The Bridge of Sighs?
Example Output:
bridge of sighs