26121
Bioinspired design and macroscopic assembly of poly ( vinyl alcohol ) - coated graphene into kilometers - long fibers .
 Chemical: poly ( vinyl alcohol ); Chemical: graphene
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: poly ( vinyl alcohol ), graphene 
Answer:
 Chemical: poly ( vinyl alcohol ); Chemical: graphene