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Residents near the ICMESA chemical plant in Seveso were exposed to some of the highest known residential levels of 2 , 3 , 7 , 8 - TCDD as a result of an explosion at the plant .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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