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

Ex Input:
In which city were the 1912 Olympic games held Oslo, Antwerp or Stockholm?

Ex Output:
1912 summer olympics


Ex Input:
What name is given to the disease whereby parasites can change the behaviour of rats and mice, making them drawn to rather than fearful of the scent of cats?

Ex Output:
cat


Ex Input:
Who painted 'The Adoration of the Magi' and 'The Last Supper'?

Ex Output:

adoration of the magi