19258
Data from NCI - H716 cells showed that both GTS and Rb1 promoted GLP1 secretion .
 Chemical: Rb1
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: Rb1 
Answer:
 Chemical: Rb1