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The emirate was brought to an end by Nikephoros Phokas , who launched a huge campaign against it in 960 – 961 .
 Nikephoros Phokas
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nikephoros Phokas