instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
 'The Dream of Gerontius' is the 1900 work of which English composer?
answer:
the dream of gerontius


question:
What is the title of the four-episode special of 'Doctor Who', made for the Red Nose Day telethon in the UK, broadcast in March 1999?
answer:
doctor who


question:
Who plays Dalton Russell, who tells why he is in a cell, in the 2006 film Inside Man?
answer:

inside man