897
The efficacy and safety of a new benzodiazepine antagonist , flumazenil , were assessed in a double - blind multicenter study .
 Chemical: benzodiazepine; Chemical: flumazenil
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: benzodiazepine, flumazenil 
Answer:
 Chemical: benzodiazepine; Chemical: flumazenil