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Anthocyanins are a class of naturally occurring polyphenols which have been most widely studied in recent decades for the rapid development of relative techniques .
 Chemical: Anthocyanins; Chemical: polyphenols
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: Anthocyanins; Chemical: polyphenols