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they are going over there to do a mission they believe in and as we said , 250 left yesterday .
 there, they, they, we, 250
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 there, they, they, we, 250