TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Joseph Addison and Richard Steele founded (in 1711), and Boris Johnson edited, which British magazine?

SOLUTION: boris johnson

PROBLEM: In 1951, which European country saw the abdication of King Leopold lll in favour of his son Baudouin?

SOLUTION: baudouin of belgium

PROBLEM: What is the largest city in Brazil?

SOLUTION:
brazil