8354
The coverage of L - PS ( PAA ) by S - PS ( PVP ) could be controlled by adding PVP homopolymer to the L - PS ( PAA ) dispersion and by changing the molecular weight of the stabilizers .
 Chemical: PS ( PAA ); Chemical: PS ( PVP ); Chemical: PVP; Chemical: PS ( PAA )
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: PS ( PAA ); Chemical: PS ( PVP ); Chemical: PVP; Chemical: PS ( PAA )