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Cremation pits were dug behind crematorium V. The incoming volume was so great that the " Sonderkommando " resorted to burning corpses in open-air pits as well as in the crematoria .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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