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While Tandja said that he needed to remain in office to oversee various projects of tremendous economic value , others felt that Niger , as one of the poorest nations in the world , was in a poor position to cope with any degree of isolation .
 Tandja, Niger
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tandja, Niger