TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who wrote the novels About A Boy, How To Be Good and High Fidelity?

SOLUTION: how to be good

PROBLEM: Who wrote `20,000 Leagues Under The Sea`?

SOLUTION: 20,000 leagues under the sea

PROBLEM: Which river flows through Cork City where it splits in two for a short distance, creating an island on which Cork's city centre is built?

SOLUTION:
cork