1920
OBJECTIVE : To describe associations between the use of benzodiazepines or related drugs ( BZDs / RDs ) and health , functional abilities and cognitive function in the elderly .
 Chemical: benzodiazepines; Chemical: BZDs
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: benzodiazepines, BZDs 
Answer:
 Chemical: benzodiazepines; Chemical: BZDs