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Chukwuemeka Chikelu is a Nigeria n lawyer and politician who was a National Representative from Anambra State ( 1999 – 2003 ) , and then was Minister of Information and National Orientation during the second term of President Olusegun Obasanjo .
 Chukwuemeka Chikelu, Nigeria, Anambra State, 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:
 Chukwuemeka Chikelu, Nigeria, Anambra State, Olusegun Obasanjo