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

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

Output: highway 61 revisited


Input: Consider Input: Which 1970s musical film starred Angela Lansbury as a trainee witch?

Output: angela lansbury


Input: Consider Input: Who played King Arthur in the 2004 film 'King Arthur'?


Output: king arthur