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So far , three of the M - 139 bomblets have been confirmed to contain sarin , the same chemical used in a Tokyo subway attack in 1995 that killed 12 people .
 Tokyo, 12 people, subway, three of the M - 139 bomblets, the M - 139 bomblets, sarin, the same chemical used in a Tokyo subway attack in 1995 that killed 12 people
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Tokyo, 12 people, subway, three of the M - 139 bomblets, the M - 139 bomblets, sarin, the same chemical used in a Tokyo subway attack in 1995 that killed 12 people