3068
Ketamine combinations for the field treatment of soman - induced self - sustaining status epilepticus .
 Chemical: Ketamine; Chemical: soman
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: Ketamine, soman 
Answer:
 Chemical: Ketamine; Chemical: soman