9259
This research investigates the release of DS - SILY from fast - dissolving polymer films composed of poly ( vinyl alcohol ) ( PVA ) and poly ( ethylene glycol ) ( PEG ) .
 Chemical: poly ( vinyl alcohol ); Chemical: PVA; Chemical: poly ( ethylene glycol ); Chemical: PEG
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: poly ( vinyl alcohol ); Chemical: PVA; Chemical: poly ( ethylene glycol ); Chemical: PEG