instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Chris Difford and Glenn Tilbrook founded which band in 1974?
answer:
chris difford


question:
What is the capital of the American state of Delaware Boise, Dover or Jefferson City?
answer:
delaware


question:
Who played the character Gene Hunt in the UK TV series 'Life on Mars' and 'Ashes to Ashes'?
answer:

life on mars