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Korean red ginseng ameliorates acute 3 - nitropropionic acid - induced cochlear damage in mice .
 Chemical: 3 - nitropropionic acid
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: 3 - nitropropionic acid 
Answer:
 Chemical: 3 - nitropropionic acid