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Organisers claimed that some 250 , 000 people attended the rally , creating a human column some three kilometres ( 1 . 8 miles ) long .
 Organisers, some 250 , 000 people, human
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:
 Organisers, some 250 , 000 people, human