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The Marcus brothers ' lives and the circumstances of their deaths are the subject of an article in Ron Rosenbaum 's collection of essays , The Secret Parts of Fortune .
 Marcus, Ron Rosenbaum
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Marcus, Ron Rosenbaum