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 actress played the part of Angie in EastEnders?

Answer: angie watts


Question: Aldebaran is the brightest star in which constellation?

Answer: aldebaran


Question: Which Australian band released their album 'Back in Black' in July 1980?

Answer:
back in black