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Under his command , the Pegasus sortied to defend a human ally world , out of contact with the Twelve Colonies , with an expeditionary force ( referred to as The Fifth Fleet ) that was destroyed by the Cylons ; the Pegasus , however , escaped , and was spared destruction at Baltar 's betrayal to the Cylons . "
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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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