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

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

Output: british railways board


Input: Consider Input: Who wrote the novel 'Brideshead Revisited'?

Output: brideshead revisited


Input: Consider Input: In which country is the most easterly point of Africa?


Output: africa