23576
Core - shell - structured magnetic polystyrene ( PS ) / inorganic particles were fabricated by Pickering emulsion polymerization using nanosized Fe2O3 particles as a solid stabilizer .
 Chemical: polystyrene; Chemical: Fe2O3
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: polystyrene; Chemical: Fe2O3