2747
Investigations of the patient revealed no biochemical or structural central nervous system abnormalities that could have provoked the convulsions .
 Disease: nervous system abnormalities; Disease: convulsions
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: nervous system abnormalities; Disease: convulsions