Thank you. As commented by reviewer, the content of Section 3.1 includes the content of Section 2. However, for the 3.2 Expansion of smart city structure that we want to present, I think it is necessary to organize the contents of Section 2 through Section 3.1 and to draw limitations. Of course, it is also correct to understand the structure as the opinions of reviewer. We put a lot of thought into reflecting the opinions. We are sorry; however, we have decided that it is difficult to change the structure at the moment. We ask for your generous understanding of the current structure.
This may be because of the error message 3 in sourcing in the document I received.