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

Who won the 2011 Booker Prize for 'The Sense of an Ending'?
the sense of an ending

Which engineer built the Menai Suspension Bridge and the Caledonian Canal?
menai suspension bridge

Balham, Clapham and Peckham are districts of which British city?

peckham