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 film actor (1895-1926) is known for his films The Four Horsemen, The Sheik and Blood And Sand?

SOLUTION: blood and sand

PROBLEM: Who played the character Gene Hunt in the UK TV series 'Life on Mars' and 'Ashes to Ashes'?

SOLUTION: life on mars

PROBLEM: The boundaries of four states of the USA, known as the Four Corners states, meet at one point, the only such geographic point in the USA. They are Colorado, New Mexico, Arizona and which other?

SOLUTION:
four corners