instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Who painted The Card Players, at Feb 2012 the most expensive artwork in the world?
answer:
the card players

question:
Where on Prince Edward Island, Canada, is Anne of Green Gables located?
answer:
canada

question:
Who sang 'Don't Go Breaking My Heart' with Elton John?
answer:
don't go breaking my heart