1488
There is still no proof of causative effect of VPA in patients with encephalopathy , but only of an association with an assumed causal relation .
 Chemical: VPA; Disease: encephalopathy
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: VPA, encephalopathy 
Answer:
 Chemical: VPA; Disease: encephalopathy