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Prevention of cancer through the diet is receiving increasing interest , and cocoa because of its polyphenolic compounds has become an important potential chemopreventive and therapeutic natural agent .
 Chemical: polyphenolic
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: polyphenolic 
Answer:
 Chemical: polyphenolic