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: Who, as the first chairman of the British Rail Board, infamously directed the huge reduction in railway lines across the UK in the 1960s?

Answer: british railways board


Question: Basil Rathbone made 14 Sherlock Holmes films. Who played the part of Dr Watson?

Answer: watson


Question: Who plays Detective Inspector Dave Creegan in the UK television series 'Touching Evil'?

Answer:
touching evil