instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In which city were the 1912 Olympic games held Oslo, Antwerp or Stockholm?
answer:
1912 summer olympics


question:
The plays 'The Barber of Seville' and 'Marriage of Figaro' were written by whom?
answer:
the marriage of figaro


question:
In which country would you find the Moorish castle called the Alhambra?
answer:

alhambra