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

Ex Input:
Betty Driver played which role in Coronation Street?

Ex Output:
betty driver


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

Ex Output:
charlie croker


Ex Input:
The Common Sense Book of Baby and Child Care?

Ex Output:

baby and child care