15714
Add - on therapy with the DPP - 4 inhibitor sitagliptin improves glycemic control in insulin - treated Japanese patients with type 2 diabetes mellitus .
 Chemical: sitagliptin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: sitagliptin