Failure to convert included files from .org to .rst using pandoc

Question

Problem

I am writing blogs using Emacs org-mode. Specifically, I first create contents and get ml.org file and then convert it into ml.rst using pandoc command pandoc -f org -t rst ml.org.

In order to modulize the contents I wrire. I use the following code in org-mode

* Supervised Learning
** Regression
#+INCLUDE: "ml/linear.org" :minlevel 3
** Classification
#+INCLUDE: "ml/logistic.org" :minlevel 3

* Unsupervised Learning
** Clustering
#+INCLUDE: "ml/kmeans.org" :minlevel 3
#+INCLUDE: "ml/spectral.org" :minlevel 3

** Dimensionality Reduction
#+INCLUDE: "ml/pca.org" :minlevel 3
#+INCLUDE: "ml/tsne.org" :minlevel 3

When converting this file into pdf using LaTex, the structure is correct and is shown here. However, after conversion to ml.rst file, none of these files are included.

What I Have Done

It seems that this could be done using template feature in pandoc, but I am not sure what to do.

Could anyone help me, thank you in advance.