14410
The colloidal particles consist of a solid polystyrene core and a cross - linked poly - N - ( isopropylacrylamide ) shell with embedded crystalline titanium dioxide ( TiO ( 2 ) ) nanoparticles ( d = 6 +/- 3 nm ) .
 Chemical: polystyrene; Chemical: poly - N - ( isopropylacrylamide ); Chemical: titanium dioxide; Chemical: TiO ( 2 )
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: poly - N - ( isopropylacrylamide ); Chemical: titanium dioxide; Chemical: TiO ( 2 )