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In a UEFA Champions League group stage match against Ajax in September 2003 , he was sent off during second-half injury time after slapping Ajax striker Zlatan Ibrahimović in the face with the back of his hand .
 Ajax, Ajax, Zlatan Ibrahimović
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ajax, Ajax, Zlatan Ibrahimović