24415
Discovery of a novel series of non - nucleoside thumb pocket 2 HCV NS5B polymerase inhibitors .
 Chemical: nucleoside
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: nucleoside 
Answer:
 Chemical: nucleoside