12581
Sedative and anticonvulsant activities were evaluated in mice using pentobarbital - induced sleeping assay and pentylenetetrazole ( PTZ ) - induced convulsion assay .
 Chemical: pentobarbital; Chemical: pentylenetetrazole; Chemical: PTZ
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: pentobarbital, pentylenetetrazole, PTZ 
Answer:
 Chemical: pentobarbital; Chemical: pentylenetetrazole; Chemical: PTZ