20224
Valproic acid ( VPA ) is an antiepileptic drug with narrow therapeutic window .
 Chemical: Valproic acid; 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: Valproic acid, VPA 
Answer:
 Chemical: Valproic acid; Chemical: VPA