test.xml

<?xml version="1.0" encoding="utf-8"?>
<annotation>
   <entryCount>2</entryCount>
   <entry>
      <fileName>img_no_1</fileName>
      <tag>normal</tag>
      <polygon>
         <pt>
            <x>1</x>
            <y>1</y>
         </pt>
         <pt>
            <x>1</x>
            <y>2</y>
         </pt>
         <pt>
            <x>1</x>
            <y>3</y>
         </pt>
         <pt>
            <x>2</x>
            <y>1</y>
         </pt>
         <pt>
            <x>2</x>
            <y>2</y>
         </pt>
      </polygon>
   </entry>
   <entry>
      <fileName>img_no_2</fileName>
      <tag>normal</tag>
      <polygon>
         <pt>
            <x>1</x>
            <y>1</y>
         </pt>
         <pt>
            <x>1</x>
            <y>2</y>
         </pt>
         <pt>
            <x>1</x>
            <y>3</y>
         </pt>
         <pt>
            <x>2</x>
            <y>1</y>
         </pt>
         <pt>
            <x>2</x>
            <y>2</y>
         </pt>
      </polygon>
   </entry>
</annotation><!--this is a comment-->