9199
In order to address these questions , we synthesised polyvinylpyrrolidone - coated IONP , characterised the particle dispersion in various media and investigated the consequences of an IONP exposure using an array of biochemical and biological assays .
 Chemical: polyvinylpyrrolidone
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: polyvinylpyrrolidone 
Answer:
 Chemical: polyvinylpyrrolidone