20227
In addition , the chronic effect of HQT was also evaluated by coadministration of the 7th dose at 0 . 5h before VPA .
 Chemical: VPA
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: VPA 
Answer:
 Chemical: VPA