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

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

Ex Output:
barcelona


Ex Input:
Who stars in the TV series Californication?

Ex Output:
californication


Ex Input:
Which 'Coronation Street' character was played for may years by Jean Alexander?

Ex Output:

jean alexander