TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Who directed the 2005 film 'Brokeback Mountain'?

SOLUTION: brokeback mountain

PROBLEM: In which bay is Alcatraz?

SOLUTION: alcatraz island

PROBLEM: 'The Aeneid' by Virgil tells the story of which Trojan who travelled to Italy, where he became the ancestor of the Romans?

SOLUTION:
aeneid