7480
Poly ( N - vinylpyrrolidone ) ( PVP ) , an important water soluble synthetic polymer , has many desirable properties including low toxicity , chemical stability , and good biocompatibility .
 Chemical: Poly ( N - vinylpyrrolidone ); Chemical: PVP
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 ( N - vinylpyrrolidone ), PVP 
Answer:
 Chemical: Poly ( N - vinylpyrrolidone ); Chemical: PVP