8881
This is the first study to demonstrate that the novel delta opioid receptor agonist KNT - 127 produces distinct anxiolytic - like effects in rats , without producing the adverse effects associated with benzodiazepines .
 Chemical: KNT - 127; Chemical: benzodiazepines
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: KNT - 127, benzodiazepines 
Answer:
 Chemical: KNT - 127; Chemical: benzodiazepines