29421
Vildagliptin + metformin were more effective than placebo + metformin in reducing body weight and BMI , glycemic control , HOMA - IR , glucagon and insulin resistance measurements .
 Chemical: Vildagliptin; Chemical: metformin; Chemical: metformin
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: Vildagliptin, metformin, metformin 
Answer:
 Chemical: Vildagliptin; Chemical: metformin; Chemical: metformin