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: At the recent Tony Awards who won the award for Best Actress in a Play for her performance as Queen Elizabeth II in the play The Audience by Peter Morgan?

Answer: tony award for best actress in a play


Question: What is the SI unit of capacitance?

Answer: capacitance


Question: Who set Cardinal Newman's poem The Dream of Gerontius to music in his 1900 oratorio?

Answer:
the dream of gerontius