TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which Union leader of the American Civil War gave his name to a tree in California's 'Sequoia National Park'?

SOLUTION: american civil war

PROBLEM: Who was the first person to sign the American Declaration of Independence?

SOLUTION: united states declaration of independence

PROBLEM: Which country hosted the 2003 ICC Cricket World Cup?

SOLUTION:
2003 cricket world cup