Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Which Dickens novel is subtitled The Parish Boy's Progress?

Answer: charles dickens


Question: Brothers Richard and Simon Mantell played which sport for England in the 2010 Commonwealth Games?

Answer: 2010 commonwealth games


Question: John Adams and which other American president died on the Fourth of July 1826?

Answer:
president of the united states