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

Ex Input:
Which TV screenwriter created the science fiction shows, Survivors and Blake's Seven?

Ex Output:
blake's 7


Ex Input:
The towns od Grimsby and Cleethorpes are in which English county?

Ex Output:
grimsby


Ex Input:
Crash, rise and hi-hat are all types of which musical instrument?

Ex Output:

crash cymbal