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AON Centre ( Royal Insurance Group Building ) is a commercial office complex located in Melbourne , Victoria , Australia at 430-444 Collins Street , right in the heart of the Melbourne CBD .
 Melbourne, Victoria, Australia, Melbourne
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Melbourne, Victoria, Australia, Melbourne