1116
Apamin , a selective blocker of calcium - dependent potassium channels , was administered intracerebroventricularly in rats anesthetized with 0 . 8 % sevoflurane to investigate the mechanism of the anticonvulsive effects .
 Chemical: Apamin; Chemical: calcium; Chemical: potassium; Chemical: sevoflurane
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: Apamin, calcium, potassium, sevoflurane 
Answer:
 Chemical: Apamin; Chemical: calcium; Chemical: potassium; Chemical: sevoflurane