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The Overseas Pakistanis Foundation estimates their population at 700 people , while there are up to 110 Pakistani prisoners in Yemeni prisons for various offenses The Houthi rebels are reported to have Pakistani fighters in their ranks .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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