10697
In young adult animals , we measured free ethanol consumption in the two - bottle choice paradigm , motivation for ethanol in the operant self - administration task and both ethanol ' s rewarding and aversive properties in the conditioned place preference ( CPP ) and taste aversion ( CTA ) paradigms .
 ethanol, ethanol, ethanol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 ethanol, ethanol, ethanol