10239
The discriminative stimulus effects of rac - BHFF were not mimicked by the GABA ( B ) receptor agonists baclofen and gamma - hydroxybutyrate ( GHB ) , not by diazepam , and not by alcohol , cocaine , and nicotine , whose self - administration has been reported to be attenuated by GABA ( B ) receptor - positive modulators .
 Chemical: rac - BHFF; Chemical: GABA; Chemical: baclofen; Chemical: gamma - hydroxybutyrate; Chemical: GHB; Chemical: diazepam; Chemical: alcohol; Chemical: cocaine; Chemical: nicotine; Chemical: GABA
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: rac - BHFF; Chemical: GABA; Chemical: baclofen; Chemical: gamma - hydroxybutyrate; Chemical: GHB; Chemical: diazepam; Chemical: alcohol; Chemical: cocaine; Chemical: nicotine; Chemical: GABA