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

[EX Q]: Alejandro Amaya, Carlos Arruza, Jaime Bravo and Carmelo Torres are famous Mexican?
[EX A]: alejandro amaya

[EX Q]: Who composed the opera 'Albert Herring' in 1947?
[EX A]: albert herring

[EX Q]: Which British organisation, started in 1939 under Basil Dean and disbanded in 1946, represented the mobilisation of the entertainment industry?
[EX A]:
basil dean