7483
PVP may therefore be seen as a promising antifouling surface modifier comparable to poly ( ethylene glycol ) ( PEG ) .
 Chemical: PVP; Chemical: poly ( ethylene glycol ); Chemical: PEG
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: PVP, poly ( ethylene glycol ), PEG 
Answer:
 Chemical: PVP; Chemical: poly ( ethylene glycol ); Chemical: PEG