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

Ex Input:
Who was Domenikos Theotocopoulos better known as?

Ex Output:
museum of el greco


Ex Input:
To which actress is Daniel Craig married?

Ex Output:
daniel craig


Ex Input:
What was the name of Britain`s first nuclear powered submarine?

Ex Output:

united kingdom of great britain and ireland