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

Which Dickens novel is subtitled The Parish Boy's Progress?
charles dickens

In book and film, which vessel was commanded by Charlie Allnut?
charlie allnut

Who played the part of 'Jimmy' in the 1970s TV comedy 'The Fall and Rise of Reginald Perrin', going on to further success in 'As Time Goes By'?

as time goes by