23019
Subsequently , changes in hepatic microsomal CYP3A activity and the pharmacokinetic profiles of midazolam and 1 ' - hydroxy midazolam in plasma were studied to evaluate CYP3A activity .
 Chemical: midazolam; Chemical: 1 ' - hydroxy midazolam
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: midazolam, 1 ' - hydroxy midazolam 
Answer:
 Chemical: midazolam; Chemical: 1 ' - hydroxy midazolam