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When compared to other meat products ( beef , mutton and chicken ) it is clear that pork is a good source of B vitamins , especially vitamin B3 .
 Chemical: B vitamins; Chemical: vitamin B3
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: B vitamins; Chemical: vitamin B3