TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: On which holiday island are the peaks of 'Ruivo' and 'Arieiro', and the airport of 'Santa Cruz'?

SOLUTION: pico do arieiro

PROBLEM: What name is given to the Fourth (4th) movement in Beethoven's / Ninth (9th) Symphony?

SOLUTION: ludwig van beethoven

PROBLEM: In which Australian state can you find the Derwent river?

SOLUTION:
river derwent