16839
The insulating NT behaviour changes after internal modification from silicate to phosphate , phosphite , arsenate and arsenite , as well as the charge distribution inside and outside the nanotubes .
 Chemical: silicate; Chemical: phosphate; Chemical: phosphite; Chemical: arsenate; Chemical: arsenite
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: silicate, phosphate, phosphite, arsenate, arsenite 
Answer:
 Chemical: silicate; Chemical: phosphate; Chemical: phosphite; Chemical: arsenate; Chemical: arsenite