9288
Specifically , we study photovoltaic devices made from 1 : 1 blends of the polyfluorene copolymers poly ( 9 , 9 ' - dioctylfluorene - co - bis - N , N ' - ( 4 - butylphenyl ) - bis - N , N ' - phenyl - 1 , 4 - phenylene - diamine ) ( PFB ) and poly ( 9 , 9 ' - dioctylfluorene - co - benzothiadiazole ) ( F8BT ) .
 Chemical: polyfluorene; Chemical: poly ( 9 , 9 ' - dioctylfluorene - co - bis - N , N ' - ( 4 - butylphenyl ) - bis - N , N ' - phenyl - 1 , 4 - phenylene - diamine; Chemical: PFB; Chemical: poly ( 9 , 9 ' - dioctylfluorene - co - benzothiadiazole; Chemical: F8BT
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: polyfluorene, poly ( 9 , 9 ' - dioctylfluorene - co - bis - N , N ' - ( 4 - butylphenyl ) - bis - N , N ' - phenyl - 1 , 4 - phenylene - diamine, PFB, poly ( 9 , 9 ' - dioctylfluorene - co - benzothiadiazole, F8BT 
Answer:
 Chemical: polyfluorene; Chemical: poly ( 9 , 9 ' - dioctylfluorene - co - bis - N , N ' - ( 4 - butylphenyl ) - bis - N , N ' - phenyl - 1 , 4 - phenylene - diamine; Chemical: PFB; Chemical: poly ( 9 , 9 ' - dioctylfluorene - co - benzothiadiazole; Chemical: F8BT