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The Graff Diamonds robbery took place on 6 August 2009 when two men posing as customers entered the premises of Graff Diamonds in New Bond Street , London and stole jewellery worth nearly £ 40 million ( US$ 65 million ) .
 Graff, Graff, London
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Graff, Graff, London