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

Example Input: 'Highway 61 Revisited' and 'Blood On The Tracks' were both albums released by which popular singer?
Example Output: highway 61 revisited

Example Input: Which actress played the part of Angie in EastEnders?
Example Output: angie watts

Example Input: Which river forms the boundary between Burma and Thailand?
Example Output:
myanmar