11999
Tadpoles were exposed to five concentrations of TiSiO ( 4 ) - NP ( 8 . 2 , 10 . 2 , 12 . 8 , 16 and 20 mg / L ) plus a control .
 Chemical: TiSiO ( 4 )
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: TiSiO ( 4 ) 
Answer:
 Chemical: TiSiO ( 4 )