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We consider this episode of SIADH to be the result of a combination of factors including a weakness of the central nervous system and the long - term administration of VPA .
 Disease: SIADH; Disease: weakness of the central nervous system; Chemical: VPA
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: SIADH; Disease: weakness of the central nervous system; Chemical: VPA