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:
Christian Grey is a character in what recent book trilogy?
answer:
christian grey


question:
Who is the President of Argentina ?
answer:

argentina