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Robert Michael " Bob " Sirott ( born August 9 , 1949 ) , an American broadcaster , is a news anchor at WFLD - TV in Chicago and radio host at WGN-AM .
 Bob, Sirott
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bob, Sirott