26767
Furthermore , the presence of nc - ATO 2D and 3D " underlayer " structures with hematite deposited on top resulted in decreased charge transfer resistances and an increase in the number of available active surface sites at the semiconductor - liquid junction when compared to hematite films lacking any nc - ATO substructures .
 Chemical: ATO; Chemical: hematite; Chemical: hematite; Chemical: ATO
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: ATO, hematite, hematite, ATO 
Answer:
 Chemical: ATO; Chemical: hematite; Chemical: hematite; Chemical: ATO