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The presidential election , held on 29 February 1999 , was won by PDP candidate Olusegun Obasanjo .
 Olusegun Obasanjo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Olusegun Obasanjo