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Fish contains both beneficial substances e . g . docosahexaenoic acids but also harmful compounds e . g . methylmercury .
 Chemical: docosahexaenoic acids; Chemical: methylmercury
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: docosahexaenoic acids; Chemical: methylmercury