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In 2004 , Chikelu announced an " image laundry " scheme to improve Nigeria 's international image and make the country more attractive to foreign investors .
 person: Chikelu; location: Nigeria
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Chikelu; location: Nigeria