29424
Vildagliptin , in addition to metformin , proved to be effective in improving beta - cell function and in reducing insulin resistance measurements .
 Chemical: Vildagliptin; 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 
Answer:
 Chemical: Vildagliptin; Chemical: metformin