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: Which novel by A J Cronin is credited with laying down the foundation in Great Britain for the introduction of the National Health Service?

Answer: a. j. cronin


Question: In which US state are the Catskill Mountains?

Answer: catskill mountains


Question: Where was the Bhopal disaster that took place at a pesticide plant owned and operated by Union Carbide (UCIL), when the plant released methyl isocyanate (MIC) gas and other toxins in December 1984, exposing over 500,000 people?

Answer:
bhopal