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

Ex Input:
Which former 'Eastenders' actor and Labour activist was elected to be one of the West Midlands representatives in the European parliamentary elections of 1999?

Ex Output:
eastenders

Ex Input:
In which British city would you find Barlinnie prison?

Ex Output:
hm prison barlinnie

Ex Input:
What is the capital of Bosnia and Herzegovina?

Ex Output:
bosnia and herzegovina