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Under serious pressure as a result of the 1997 civil war , President Pascal Lissouba appointed Kolélas , his old rival , as Prime Minister at the head of a national unity government in September 1997 .
 Pascal Lissouba, Kolélas
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pascal Lissouba, Kolélas