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

Responsible for such films as 'Saving Private Ryan' and 'Gladiator', which film Production Company was founded by Steven Spielberg, Jeffrey Katzenberg and David Geffen in 1994?
saving private ryan

Joanna Lumley and David McCallum played which pair in a TV series?

joanna lumley

