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Human rights campaigner Helen Bamber dies at the age of 89 http://t.co/tqCr7fj1Yw http://t.co/yWTAkD01EU
 Helen Bamber
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Helen Bamber