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A discussion of the history of ergot includes its original discovery , the epidemics of gangrene that it has caused through the ages and its past and present role in the management of migraine headache .
 Chemical: ergot; Disease: gangrene; Disease: migraine headache
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: ergot; Disease: gangrene; Disease: migraine headache