30260
Evaluation of 2 ' - alpha - fluorine modified nucleoside phosphonates as potential inhibitors of HCV polymerase .
 Chemical: 2 ' - alpha - fluorine; Chemical: nucleoside phosphonates
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: 2 ' - alpha - fluorine, nucleoside phosphonates 
Answer:
 Chemical: 2 ' - alpha - fluorine; Chemical: nucleoside phosphonates