In this task, You are given an open-domain question that can be answered based on factual information. Your task is to provide \*short\* answer (in a few words only) for the given question. The short answer can be one or more entities or it can also be boolean \*yes\* or \*no\*.
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Question: what do we call the currency of australia

Answer: The Australian dollar


Question: who sang the songs in the movie burlesque

Answer: Christina Aguilera


Question: who directed the musical episode of grey's anatomy

Answer:
Tony Phelan