3468
Therapeutic ranges for antidepressants that have been derived from general adult population studies may not be appropriate for the elderly .
 Chemical: antidepressants
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: antidepressants 
Answer:
 Chemical: antidepressants