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

Input: Consider Input: In which range of mountains are the two highest peaks Aconcagua and Ojos Del Salado?

Output: aconcagua


Input: Consider Input: The plays 'The Barber of Seville' and 'Marriage of Figaro' were written by whom?

Output: the marriage of figaro


Input: Consider Input: In which European country is the city of Bratislava?


Output: bratislava