Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Example Input: What was Paul McCartney's first solo album called?
Example Output: album

Example Input: What was the computer's name in 2001: A Space Odyssey?
Example Output: 2001: a space odyssey

Example Input: Which US actor, who appeared in the film 'East of Eden', died in a car accident in 1955?
Example Output:
east of eden