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

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

Who follows 'the eight fold path'?
noble eightfold path

Which actress played Queen Victoria in the 1970s TV drama Edward the Seventh?
edward the seventh