instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
The rivers Axe, Brue, Cary, Parrett, eta, are in which English county?
answer:
castle cary


question:
Which American actor and singer has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?
answer:
britain's got talent


question:
Crowned o June 1st 1533, Anne Boleyn was the mother of which monarch?
answer:

anne boleyn