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The central amygdala ( CeA ) is a critical brain region mediating anxiety - related behavior and drug reward and is a likely site for the interaction of the KOR system and ethanol , although few studies have explored this interaction .
 Chemical: ethanol
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: ethanol