18560
Following evaluation at clinically relevant GABA receptors , we have identified a difluoromethyl ketone that is a potent GABAB agonist , obtained its X - ray structure , and presented preliminary in vivo data in alcohol - preferring mice .
 Chemical: GABA; Chemical: difluoromethyl ketone; Chemical: alcohol
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: GABA, difluoromethyl ketone, alcohol 
Answer:
 Chemical: GABA; Chemical: difluoromethyl ketone; Chemical: alcohol