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2 - Amino - 4 - arylthiazole compounds as TRPA1 antagonists ( WO 2012085662 ) : a patent evaluation .
 Chemical: 2 - Amino - 4 - arylthiazole
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: 2 - Amino - 4 - arylthiazole 
Answer:
 Chemical: 2 - Amino - 4 - arylthiazole