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

Ex Input:
In which famous film did Michael Caine play a character named Charlie Croker?

Ex Output:
charlie croker


Ex Input:
Which 1981 film , directed by John Huston, starred footballers Bobby Moore, Pele and Osvaldo Ardiles?

Ex Output:
osvaldo ardiles


Ex Input:
Which actress played Samantha in the comedy series Bewitched?

Ex Output:

samantha